I think I basically agree with this framing.
"And yet, when Trudeau first torpedoed the idea in 2017, he said it was because Canadians were undecided about what kind of voting system they preferred.
Trudeau might have more accurately said 'I didn’t get what I wanted.'"
https://www.thestar.com/opinion/contributors/he-regrets-it-dont-forget-justin-trudeau-was-the-architect-of-electoral-reform-s-demise/article_9cbc5424-cd0b-11ef-b44e-639f030a646b.html