This is acutally good for art in general. Artists protest that art created by AI is not art, and to some extent, I agree (if we consider the emotional aspect of art) but it's in no way a threat to human artists. In fact, it puts more value on human made art. Also, for years there has been generic "art" made by people that is in no way more "artistic" than the AI made.
You might be right:
In the end, digital photography, where everyone makes thousands of photographs every months, put an end to artistic photography? No.
The artistic value remains intact.
So the artistic value of an human made painting couldn’t be challenged by thousands of artistic valuable AI generated paintings.