Interesting conversation . . . okay, I'm no fan of RCV just because say you have 5 candidates. In the second round of voting, you'll be left with four. If you voted for the one that finished fifth, they allocate your vote to your second choice, but whoever voted for the other four are locked in, until round 3. Then the person that voted first or second to third place gets that vote allocated to the other two but voters for one and two are still locked in. Look at the average voter, this is too complicated and convoluted and look at the average programmer who's going to allocate all these votes in all these rounds.
Yes, RCV did jam up Alaska but that state is off anyways - I never believed, pre-RCV, that Murk won that write-in vote years ago, and as for that D sneaking in, really Sarah Palin should have stayed out the race, instead of jumping in at the last minute. And RCV may have helped that awful NYC mayor.
I don't think it always helps the left:
The implications of MAGA radio host Frank Morano’s dominating win last month for a seat on New York
townhall.com
and some "blue" states have voted it down, like Colorado. There's the ballot fatigue, the idea of an instant run-off that you have already voted in not knowing the outcome at all, and no time to adjust. RCV looks pretty easy to game, especially in a state the one party dominates. Nah.