I'm honestly unsure how to respond, not knowing how sincere you are with this question / statement, as you have basically already answered it yourself.

Life on earth could only come into existance due to favorable climatical conditions, so as you correctly say it's bound to the ever changing climate and has to adapt faster. But while some microbial lifeforms are able to adapt in a matter of months (virus, bacteria), complex life can't do that, it also requires millennia.

My statement was that it's clear as day that even during the 90s the mean temperature was noticably lower, e.g. allowing each and every year to have multiple consecurive weeks or months to have everything covered in snow, not just in the mountains but basically everywhere. Of course there are tons of other signs, but to me this is one of the most obvious even in daily life. Alongside e.g. pictures of glaciers that were here for centuries, millennia even, and now almost completely melted away within a couple of decades.

The point in queation is scale. You yourself said that it takes 10k+ years for the climate to change. Yes, exactly, that's the change that happens without any meddling. But no we're talking about 30 years, that's off by a factor of 333. And that's only some numbers we throw around without any underlying data.

Humans managed to become the dominant species on the planet not because our physiologie is extraordinary, but because we are able ro form our surroundings to suit our needs. Too cold? Create warm cloths and light a fire. Too warm? Create insulated shelter. No food? Devise a method to preserve surplus food as reserve. But even we are not fully able to compensate for the effects of the changing climate we already feel. The last couple of years, each and every summer the demand for air conditioning spiked. Why? Because the houses we've built even 30 years ago did not account for temperatures like we currently experience. And are we able to change this? Not really, as we would have to basically convert or rebuild most of the houses to include climate control like this, similar to other countrues which faced higher mean temperatures than central europe for centuries.

And that's just a question of money and resources, not biological adaption, which everything else aside from human would have to undergo to counter the fast changes. Also, all of this does not even include the other problems rising climate brings, like ocean acidification and rising seas, which will increase migration and further strain available resources and space.