That makes me wonder, is there more hatred than love in the world, especially as far as fanbases go?
Well, I've always been of the following belief:
A) The internet demonstrates peoples' true nature because anonymity shields them from social recourse. That said, a huge portion of the internet is flooded with trolls and people spewing irrational hatred for virtually anything you can imagine. Which leads me to my next conclusion...
B) Human nature is inherently selfish and apathetic, hence we more often than not only care about things that benefit or pertain to ourselves. It's scientifically proven that most people feel at least a tiny amount of joy when they see someone besides themselves get screwed over at something, so you could say that sadism is in our nature as well. Not to say we can't or shouldn't fight these impulses, but the sad truth is that humans are pretty miserable creatures in general. That's why it's so important that we as individuals strive to turn the status quo.
C) Hate and love are not binary, but rather on a spectrum. Too much of either can be unhealthy. For example, the far extreme of love is blind adoration that refuses to see or address issues that can or should be corrected. No matter how crappy something is, an extreme love will delude itself into thinking that that same thing is perfect. On the opposite end of the spectrum we have pure hatred, which of course will despise anything and everything without need for logic or reason. It's an utterly destructive force that serves only the purpose of bringing pain and misery to everything around it. That said, our PERCEPTION of this spectrum can be skewed by our own bias, which brings me to my last point....
D) "Hate" can be genuine, but it can also be a misdiagnosis for criticism or disagreement which is NOT necessarily unwarranted. Some things deserve "hate" in the sense that a bad choice or behavior needs correction, but often times people only see the negative aspect of criticism. Case in point, Smash Ultimate is an EXCELLENT game in so many ways, but it is in no way flawless. Some of the flaws (like the online play/modes) are objective and easy for the fanbase to agree on while others (like the roster picks, mechanics, etc.) are totally subjective and are very debatable depending on a person's personal preferences. Unfortunately, as long as there is free will and differing views, you will always have some degree of love and hate in the world. The upside of this is that conflict and disagreements are how we learn and grow, being forced to see something from a different angle (maybe even learn that on rare occasion, we can actually be wrong).
In short, we should try to discourage things like spite and maliciousness, but accept that others are free to NOT like something as much as we might LIKE it. Or in other words, people are free to think that a given character's chances of getting in are bad, but let's please not be a bunch of bitter ***** to each other if we're proven right.