And this disagreement was one of the main reasons Trudeau abandoned the attempt. (Noting that the attempt was started then abandoned as a failed effort, which I see as different from a cynically broken promise)

There was no clear path to a consensus, even among experts, on which other system to adopt.

Couple that with the reality that the majority of Canadians don't really care about the minutae of the voting system.

Sure highly politically engaged people in discussion forums might care deeply, but the average person really doesn't.

FPTP sucks. Media amplifies its suckitude by not polling districts and letting you be informed on which candidate is a wasted vote if you are ABC for example.

One of Trump's more corrupt than average acts was telling his party to vote against an anti-immigrant bill. Politicians making things worse so you stay angry and hateful so that you turn out to vote for the politician who keeps you angry and hateful, is a weakness of democracy and the corruption we are stuck in.

There is no actual impediment to improving anything in society. Instead of collapsing society first, it is actually easier to make small optimizations if you don't live in a dumpster fire. You are acknowledging broken corrupt system if you need the dumpster fire to get bigger for progressive views to take hold.