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Could be Bile Fascination, though that's more about the psychology behind the phenomenon. So Bad, It's Good, maybe? Though works that fit in there are generally too bad even to have self-respecting hatedoms. No Such Thing as Bad Publicity?
It'd be the opposite of Acclaimed Flop, which is where a work is praised by almost everyone and bought by almost no one
Protection from Editors and Ultimate Job Security seem to be connected, but only describing facets of it. I'd be tempted to YKTTW this but it's like the king of subjective and Flame Bait... so if it doesn't already exist it probably shouldn't.
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The trope for something that everyone ostensibly hates (and has a gigantic, cross-genre hatedom) but that still sells a ton even though no one will admit to buying.
Not talking about, say, Justin Bieber or Hair Metal because those actually have proud fanbases even if they're widely despised.
More like Nickelback and similar bands in America, and Oshare Kei in Visual Kei: widely despised, but someone's driving the popularity of what is widely and openly denounced as absolute shit, So Bad Its Horrible, Genre Killer, whatever.
Kind of like Guilty Pleasure, but it's not a Guilty Pleasure in the sense that the fans driving it aren't proud even in an ironic sense. They're just... there.