> I would note that IRV has the advantage of being actually put into practice at scale (Australia, Maine)

This is exactly why it makes no sense to waste our limited activist energy and resources on IRV.

https://medium.com/@ClayShentrup/momentum-e5fd12ffce2a

> and also comes with the nice property that it can be fairly easily adjusted to work with multiple winners (ie. STV)

Score voting (and by extension STAR voting and approval voting) have a proportional multi-winner analog that's much simpler than STV and arguably better.

scorevoting.net/RRV