AI: scans all art, people can ask it to produce art they're searching for, no reference to the original or its author, people no longer pay artists/designers/...
I think there's a very obvious distinction there. The whole purpose of copyright is ensuring the financial viability of creating works. AI slop is a direct market substitute for the originals it ate up for training, so it goes directly against that. Meanwhile, search actually improves the reach of works and, well, snippets and summaries are somewhere in between...