Canada

I don’t think it’s only you. I remember him saying (and even tweeting) that 2015 will be the last FPTP election if the liberals were elected. I was younger at the time but I remember a lot of people reluctantly voted for him instead of the NDP just to finally end FPTP and be able to choose the NDP as their first choice in the next election (but still choose the liberals as their second choice, to keep the conservatives out). Further reading for anyone interested: https://en.wikipedia.org/wiki/Vote_splitting

Then they won, claimed that they couldn’t find an alternative that everyone liked, and apparently that was it.

My understanding is that many people would have been happy with “anything” besides FPTP, but weren’t able to agree on their first choice? …surely it’s not that ironic? Or maybe there’s more to it than that?

Anyway overall the liberals may have still been the best choice… but this wasn’t some minor promise that he made. I think this is what was most important to a lot of people. Err.. I think? No one seems to talk about it now.

edit1: added link to tweet

edit2: This article seems to summarize the timeline: https://globalnews.ca/news/3102270/justin-trudeau-liberals-electoral-reform-changing-promises/

edit3: this seems more helpful: https://en.wikipedia.org/wiki/Elections_in_Canada#2015_federal_election

for not making a stronger effort to replace our first past the post voting system during what looks to have been a narrow window of opportunity, but that might just be me.

While it's not only you, it is a very small number of very vocal, very politically involved people who care much about that.