I'm pretty sure that was "black pride"

I'm not an expert on the history of these things, but according to Some Guy On The Web the first "black pride" event in the US was in 1991 and the first "gay pride" one was in 1970.

basically dancing bears

Here's a tip for you. If you wish to be seen as someone who simply follows the scientific evidence where it leads and sees that black people are on average of lower intelligence than white people, rather than a garden-variety racist, you might do better not to pretend that no black people are genuinely really good at anything. (Seriously, Louis Armstrong, notable only for being able to play jazz at all despite the handicap of being an inferior black person? Really?)

still not very impressive

I think this says more about what you're prepared to be impressed by when it's done by gay people, than about what gay people have achieved.

pad out the list

You wish to deny that Tim Cook is a good example of a successful gay person? OK, then. I'll just remark that it's not a very uncommon opinion that Cook was as critical to Apple's success as Jobs.

the same ultimately pathetic feel

Certainly not for the same reason, since no one is claiming that gay people (or black people or any other category of people) are responsible for all that's good in mathematics, or literature, or music, or business, or whatever.

a mediocre mathematician by world standards

Well, there's a thing named after him that I'd guess more than half of all professional mathematicians have heard of. That's better than most of us manage. But sure, he's a long way from being Gauss or Riemann.

I don't see that there's anything very bad about a country naming its mathematical institutions after its best mathematician, even if he's not on anyone's top-10 list. (I'd have expected you to be keen on national pride -- or does that only apply to some nations?)