1: https://news.artnet.com/art-world/italian-artist-auctioned-o...
It was considered "anti-art" at the time, but basically took over the elite art world itself and the overall movement had huge impact on what is considered art today, on performance art, sculptures, architecture that looks intentionally upsetting etc.
It's not useful to try to think of the sides as "expansive definitionists" who consider pretty much anything art just because, and "restrictive definitionists" who only consider classic masterpieces art. The divide is much more specific and has intellectual foundation and history to it.
The same motivations that led to the expansive definition in the personally transgressive, radical and subversive sense today logically and coherently oppose the pictures and texts generated in huge centralized profit-oriented companies via mechanization. Presumably if AI was more of a distributed hacker-ethos-driven thing that shows the middle finger to Disney copyrightism, they may be pro-AI.
I generally find the specific debate around "whether it's art" super boring. People have squeezed all the juice out of "what even is art" decades before the banana taped to a wall. Duchamp's Fountain, Manzoni's Artist's Shit, John Cage's 4′33″, the Red Square by Malevich, Jackson Pollock etc.
I simply don't care if it's art. It's not an inherently prestigious label to me given this history.