Yes, you're right that IRV is technically better than FPTP. Although both are winner-take-all electoral systems.

But also, the difference between IRV and STV (a proportional representation electoral system) is less than the difference between IRV and FPTP. So really, anybody preferring IRV when STV exists, is either uninformed or has ulterior motives.

With IRV being a winner-take-all electoral system, we still have wasted votes. A healthy democracy must ensure that every vote counts.

This is why I say: in the long run, the only viable long term solution is proportional representation: https://lemmy.ca/c/fairvote