I would argue 99% of the art you already see is effectively alien and meaningless, as it's all mass-produced and commercial, designed by committees, and its only purpose is to brand or advertise a product. Almost no mainstream "art" communicates anything honest or sincere, it's all soulless mind-control and emotional manipulation by the corporate capitalist machine. That there are humans involved doesn't make it meaningful, after all, there will be people writing prompts for AI as well.

But at least a lot of those people will be trying to express something even if all AI can give them is an approximation of what they would make if they had the talent.

I admit that I was excluding commercial art here, but you're right (although even commercial art is human communication).

But that just makes the issue more important. I don't want to lose what little meaningful art is actually left. Art serves a critically important social function, and if that art is no longer from people, that function is no longer served.