Well, maybe. Or disillusionment with IRV might spoil the waters for other attempts at reform, when people start to realize all the claims about ranked-choice eliminating the spoiler effect are actually false.

Certainly that's what happened in Burlington, VT where a spoiler candidate swung the 2009 mayoral election, and IRV was subsequently repealed. They didn't say "oh oops, well this experiment failed, let's try approval voting instead"; they just went back to plurality voting and that was that.