It was popular as fuck to slam Gen X, and MTV kind of embodied them. This is partially because Gen X was into self-owns, like Beavis And Butthead.
Millennials got shit on far more, but couldn’t take the criticism. It didn’t help that many identify more with Gen X culture than their own.
Gen Z gets shit on the most, but is so into doing their own thing that it doesn’t even register to them.