Can't make any assumptions one way or another. We're dealing with positive feedback loops, so even if humans all get Thanos-snapped out of existence RIGHT NOW putting a full stop to emissions, pollution, etc, the environment will continue to worsen on its own because of the downward spirals we've set into motion.

The question is how long those feedback loops can go until they're broken naturally; or if they even can be broken naturally.

We may well have set our planet on a warming path that ends with it being molten, or one that sheds our atmosphere into space.

So... things might fix themselves after we go extinct; or it'll get worse until even the most resilient of extremophiles can't carry on, and Earth becomes another lifeless rock floating in space.

/shrug