Think to really trash your legacy you’d have to release something so monstrously bad or cringeworthy that it retroactively poisons the old material and makes it unlistenable.
Is there anyone who’s screwed up so badly musically that they’ve wiped the memories of ‘the good stuff’ too, and sullied their name forever (not counting things like musicians being outed as kid-fiddlers, etc)?
Suppose the Dead Kennedys’ ‘legacy’ was pitiful: singer gets sued by his bandmates over withheld royalties; they win the case and put out some shitty ‘best of’ CD (with awful artwork) and try to flog Holiday In Cambodia to a jeans ad. I mean, I didn’t really listen to much beyond the first album and the singles, but it’s so out of whack with all their earlier bitching about Corporate Amerikkka and mindless MTV new wave clones, that you kind of wish they’d just bowed out with a shitty synth-pop album instead.