Because it's hate worthy.

It removes jobs without, at least currently, substituting an equal amount of new jobs (and even if it did, they wouldn't apply to the same people who lost theirs.

It serves for spam, public manipulation, and mass surveillance.

It constitutes massive copyright fraud.

It fills the web with slop.

It's added to products despite that users say they don't want it there, and even say they dislike it.

SEO filled the web with slop way before AI