Approval Voting seems to just dilute your vote the more candidates you vote for. Candidates will tell people people to only place one vote. What a silly system.

But ranked choice is easy to implement and in practice if everyone would put a candidate second they aren’t likely to be knocked out in the first round. There are very limited practical examples where it doesn’t provide the optimal outcome.

It also seems to have some level of support and momentum in the US and it seems to me like it’d be better not to get caught in the weeds fighting over which new voting system should be implemented there.