OP here. Thanks for reading!

I don't really have anything against the existence of the catchall term "content." Like, I don't expect the CEO of YouTube to say, "music, short film, art, comedy, journalism, ..., creators" every time he talks about YouTube users. It makes sense from their perspective to bucket everything into "content."

The thing I found interesting was just that the language had crossed over to people where it doesn't make sense to bucket everything. If I'm a blogger, I can just say "blogger" and it's more meaningful than "content creator" but I think the people running small businesses or doing creative work have needlessly adopted the big bucket terminology of "content."