I'm not sure if AI slop will make a bad situation much worse tbh. The pop stars of the 60's to 90's always depended on a distribution platform/network (record labels, radio stations, MTV, ...). Those distribution platforms either don't exist anymore, or changed their 'business model' to f*ck the artists at least two decades ago. To find the really good stuff you already have to look elsewhere, and popular music was already 90% mass produced "slop" before AI entered the scene.
E.g. this ancient Frank Zappa interview about the decline of the music industry is still as relevant as ever:
I think it will make a bad situation much worse, because CEOs of OpenAI and Antromorphic along with investors actively want to make it so. If they get more power, they will you that power to make the artists bad situation worst.
They don't have that power yet, but are consistently actively trying to worsen the situation for the last 4 years. They proudly bragged about achieving the bad situation like 2 years ago already.
It was already bad, but I think there is still room for it to get a lot worse unfortunately.