"Some proportion approaching, but probably not reaching or exceeding half of the population" should suffice.

There are more women than men in the world, but that would also mean there are more women who are into women, too. The question is whether there are more non-LGBTQ women in the extra population than there are LGTBQ women who aren't cancelled out by LGBTQ men. Either way, the numbers probably end up being close enough…

I feel like it being such an issue for you means you generally don't like the show. It may be lazy, but it's also definitively South Park.

It's not so much the delivery of the point, but that the point is being made at all. That's especially-true of South Park, which has always been more-or-less a mouthpiece for Trey and Matt.

C+? Really? Get out.

I re-watched the whole series today, and there's an amazing amount of subtle jokes and foreshadowing built in for the benefit of re-watchers. My favourite example is a line in Jimmy's very first speaking scene in the first episode: