While I agree that there are more or less tactful ways of approaching something, I have to be devil's advocate here and question the validity of claims like, "Diversity is an important aspect of society that needs to be and should be included in most media."
Firstly, "needs to be"? Why? Who says? Who is the almighty decider of social norms that decreed that "diversity" is such a crucial aspect of society in general? Acceptance of another's eccentricities is well and good, but I feel that the push for such an ideology is mostly spearheaded by the US and Europe. There are still many parts of the world that don't subscribe to that way of thinking and frankly do just fine.
There are two options here: promote, encourage and appreciate diversity, or do not.
Promoting, encouraging and appreciating diversity is an acknowledgement that specific circumstances or identity aspects of a person does not inherently make them any better or worse than anyone else, and that we all have unique, interesting viewpoints to offer.
Being apathetic/hostile towards the expression/appreciation of diversity is to say "certain perspectives/identities are inherently more important, more meaningful, more valid, and any that fall outside the predominant demographic are worthless."
Beyond being obviously and inarguably wrong from a moral standpoint, it's incredibly detrimental to innovation in all fields of art, science, technology, etc.
While I don't agree with such a practice, the overall "conform and contribute" mindset of the Japanese culture has yielded a far more successful education system, vastly lower crime rate, and a monster of a workforce. Granted, to the point of dogmatic, but when you consider the fact that hate crimes are also non-existent, one can argue the merits of lacking "diversity". I know that Japan is in a vastly different geographic and demographic setting than say the US, but the question still stands as to the "need" of diversity in the sense of obligatory racial inclusion.
A workforce on the verge of collapse, a supremely FAILED education system that creates model students who go on to have crippling mental health issues (impacting their ability to be productive members of society, hence their troubled workforce), all of which have very little to do with perceived cultural homogeny. Also, arguing that diversity isn't so great because it brings more hate crime is like saying a cure for cancer is bad because it leads to more non-cancer deaths.
Secondly, "should be included in most media"? Again, why? Do you have any idea how hard it is to accommodate EVERY persuasion of race, sexuality, gender, etc. in a given media? And if you can't accommodate them ALL, then why bother trying? To demand diversity and still omit others would just be unfair and hypocritical.
Well, like it or not, our society IS diverse. So, you have to look at this from a number of different angles:
Artistic angle: People make art for self-expression, but they often also wish to impart some kind of emotion or message unto an audience, which requires their work to be effectively realized. If your audience is diverse, it makes more sense to factor that into your work, and have your work more accurately reflect the world your audience is familiar with. A racially/culturally homogenous setting or cast is NOT what most audiences will be familiar with, so it will likely be less inherently engaging for them, and less effective at connecting with them.
Commercial angle: In a global market, with a global audience, why limit the appeal of your product? Why not make a product more reflective of the experiences more people have had?
Moral angle: (this is obvious)
An artist, writer, etc. should reserve the right to include whatever kind of characters or content they see fit, thus THEIR OWN experiences shape the media, not the perceived experiences of the potential observers. No creator should have to be hampered by checking off inclusivity boxes just because a loud minority heckles them.
This assumes that a push for diversity in storytelling and media is some unrealistic, politically-driven agenda. In reality, it's the correct observation that most mainstream media has been DEFINED by an unrealistic, politically-driven agenda, one that aimed to prioritize the experiences of conventionally-attractive, straight, white men over EVERYONE ELSE to an ABSURD degree for over a century.
There aren't some finite list of creators who are being held at gunpoint and told "make more black women characters!". The stories and experiences of those that don't fit the straight-white mold have been directly and indirectly silenced for decades, through countless different means. Increased diversity/representation just means allowing MORE people to see themselves in the media that shapes us all, and for MORE people to give us different, cool stuff.
That said, and again using the Nintendo Japan example by xpnc, the Japanese have a much different societal compass than Europe and the US. Expecting our moral relativism to be absolute is the definition of bigotry: intolerance toward those who hold different opinions from oneself. To desire a universal form of diversity is to also accept the fact that others may not be quite as "diverse" as we are.
INTOLERANCE TOWARDS INTOLERANCE IS NOT A THING. I had a young black foster kid living at my house who thought black people were ugly "because they're barely on TV". I won't abide people arguing against fair representation with completely disingenuous, misleading lines of crap like this.
Yeah, barely Smash related, but if stuff like this is posted, it can't be allowed to fester. No offense to Firox, as I'm sure you meant no ill will, but there are certain things that need to be challenged. I've promoted negative mindsets/arguments in the past inadvertently and I wish someone would have called them out.