I honestly think that it's because Smash is different. =\ Smash Bros. broke a lot of people's "first rule of fighting games", and started to go into something that isn't about being in a tiny area with a generally similar opponent with very rigid movement options(not talking about attacks) Where it's essentially a game of who can combo their opponent to death.
Smash Bros. broke every last one of those. They went more for character diversity, went to big areas, presented open-ended movement, and instead of going for the 100-hit-combos-until-your-opponent-passes-out, they go for ringouts.
It's different and people don't like it.
Me myself, I don't really get the appeal of Street Fighter, or why they consider it to be so astonishingly amazing. I've played my share of fighting games... I don't remember my first fighting game, but it was some thing for the N64.
Since then, I picked up Street Fighter for the arcade. I thought it was fun, but... Not the best thing I'd tried.
Then I picked up Smash. It was a fighting game that was more my style, with a mix of Genesis and Classic put together, with some options for specifics. It had really nice character diversity too, which I really like.
Since then, I've picked up a few more games...
I picked up Dead or Alive, which was pretty cool. (Picked up Jann Lee)... It took out a few things like jumping, but I did really like how it was set up. It took out a few things I would have liked to see, which would be... well, more character diversity.
I picked up BlazBlue, which is very fun... (I main Tao too, btw. :3) I am still enjoying it currently, as it happens. To me, it felt like a deeper and more enjoyable experience. It also had some VERY nice character diversity. I hope I will be able to play a next game if one comes out.
Then I picked up Super Street Fighter IV. Well... Uh. To be honest, it was better than the arcade version now, because I'm much older and am better at appreciating details, but... It took everything I mentioned above that I didn't like, and magnified it. It had to be, by far, the least extensively enjoyable fighter I think I've ever played, and wasn't exactly the most deep.
And before anyone says anything. I do not play tournaments due to the grotesque distance that I have to go out of my way to get to ANY tournament, but I was playing competitively. Tournaments and competitive play can happen separately.
ANYWAY. r_r But I can't fathom why they just disregard Smash, not just as a game, but as a community. I've been to other communities, and we may have... uhh... some special people who tarnish our image, but we're still better than the communities I've seen.
I've seen BlazBlue communities where nobody wanted to make even the tiniest effort to be even remotely helpful to anyone and insisted on taking the topic and killing it before hiding the body somewhere where it would never be found again.
AND I've seen Street Fighter communities where, frankly, 8-9 out of every 10 members is a jerk if you mention anything anywhere that is not Street Fighter in the same sentence as a compliment. Just yesterday, I was called a... what was it... "Stupid Noob c** gargler" or something similar, simply because my list of favorite games had BlazBlue, but not Street Fighter.
I'll admit, I'm sure they're not all like that, but come on. x_x Smash is still enough of a fighting game to deserve some respect, and our community isn't MUCH worse than others. It's... unfair, to say the absolute least.
I hope that was coherent? I tend to start rambling in longer posts.