No the gay animals keep abandoned young alive and take them in
For example (this happened irl at a zoo) a straight penguin couple hatched an egg. Then proceeded to neglect their child and not feed her. She was starving and wouldn't accept food from her keepers. Then she found the gay penguin couple across the exhibit. They took her in and fed her, and now she's a healthy juvenile penguin
And there's not as many gay people as you think, it just seems like more online because they can all group together even if none of them live in the same timezones