In my experience, there's less of a distinction than you might think.

A lot of satirical songs are absolute bangers, because (for example) to do a send-up of the tropes of X music, you must know all the tropes of X music, and be able to perform them. So a lot of satirical music is actually done by people with a lot of skill and passion for the thing being satirised.

And because satirists don't have to worry about being predictable or unoriginal, they can put in more crowd-pleasing cliches per minute than 'serious' artists, giving them the most intense X of all X artists.

(Not saying the MIT license is a banger though - just that some satirical songs are)

Personal opinion, but I think you're calling it wrong. Also personal opinion, I absolutely hate the idea of it happening, buuut...

I think it's a bit like everyone who said "black cabs in London have nothing to fear; X years of 'The Knowledge' will always be better than a guy with an App in an old Prius..." Except it was all wrong. Black cabs are probably still superior, but the bulk of people (and especially new customers) are all using Uber, because it's easier and they just don't care.

It sucks that production factory, literally built to make money, AI created junk music will be a thing, but it most likely will. Someone will exploit that they can make a ton of cash with low risk and budget. They'll have the connections to, despite initial (somewhat) faux outrage from the public/press, get radio play/playlisted online ("probably even 'ironic' addition from the hipster music crowd"). The song will be an earworm, and aside from the musicians that hear all the flaws, the passive every day mom and pop listeners will get the hook stuck in their head and it'll just be another great tune like any other.

I don't think we'll replace 'celebrity', I think that'll still happen, and I think maybe greater appreciation will happen to 'real musicians' (with a face!). But 'everyday' disposable pop (like all those one hit wonder tunes that are still played in nightclubs, pubs, throwback radio, wedding discos) - that's going to be disrupted massively.