Yes, I said “a sense off… leaving things as we found them” because I meant just that- humans think in terms they understand. They feel that they ‘inherited’ a planet with a certain amount of liveability and they feel they want to leave a planet with the same amount of livability for their grandchildren etc.
You are right- it isn’t actually literally possible!
We can't speed the process along
We can’t speed a mass extinction event like an asteroid along.
I think beyond that the question wanders into the realm of philosophy.
You could take the view that we are very definitely, unnecessarily and quickly moving along the process of creating a planet that humans can’t live comfortably on- global warming, raising see levels, less physical land for living on and growing food, more floods/fires etc etc.
On the other hand you could take the view that human evolution is natural, therefore the destructive nature of humans towards the planet grew naturally, therefore if we burn it to the ground a million years before an outside event would have done it anyway- well that is just the natural result of end stage human evolution.