It doesn’t happen in reality, of course. It’s just a hypothetical.

But there are obviously cares in nature where species have not changed (much/noticeably) for millions of years. I would call that pretty much end game, given the set of animal and plant (and other) life forms present up to that point. But sure, apocalyptic changes will turn that upside down. You could argue that those are also part of nature and that adaptation to those scenarios are also a part of evolution.

I tend to both agree and disagree. 😅