I have seen examples of cave art from 10 or 11 kya. It is far inferior to the quality of cave art from 20 and 30 kya in the French caves.
That is a fact, I have made that same point myself many times.
The cave art discussion is always an interesting one. I agree.
But part of this landscape is the fact that society has ‘rebooted’ on numerous occasions (because of continuing meteor strikes on the Earth). And eventually, another catastrophic event will occur, and we will reboot again.
Adding to the discussion....this last strike (12,900 years ago) now brings out the discussion item that maybe more than 75-percent of the animal species at the time were wiped out. So you look around the wonder about things.
How did man survive this period? It’s not fully explained yet. I suspect that DNA will eventually piece together something that will give us more insight.