Sorry, I didn't mean to imply it's worse than Plurality, as it's not. But if we're going to change voting systems then it's only ever going to happen once. If we fuck it up it ain't happening again, and we've already fucked up IRV/RCV in several locales in the US. We need to switch to something that has almost 0 problems, like 3-2-1 or STAR voting. You're going to have to explain it to the populace anyway. Better to get something that's almost perfect rather than something that people will hate because it's change and because it spoils elections. See this article on how IRV does that. https://electionscience.org/library/irv-degrades-to-plurality/
Notably, that Center for Election Science is the one that has shown that 3-2-1 or STAR are technically the best, but they actually advocate for Approval Voting, rather than those two. https://electionscience.org/approval-voting-faqs/