Pierre was a sore winner about it. There was a path here where he stood with the Bloc, talked about the importance of the federal and provincial(state) division of powers, and got them on side for pressing the attack on Trudeau.

There is a rebellion in Trudeau's party and Pierre and Blanchet could have pressed that together and made the rebels in Trudeau's party put up or shut up. This would have been good for the Conservatives and the Bloc either way. If they bring down the government and force an election, then each of them win an election. If the rebels shut up and were all talk, then they keep bleeding what little support they could have had with the people who just think Trudeau, and not his whole party, is the problem.

Instead, Pierre Poilievre ran straight to the press and was a sore winner. He trash talked Blanchet in a way that'll make him lose face for working with Poilievre to force an election. And it's fucked up because the Conservatives aren't going to gain much of anything in Quebec. It was just grandstanding for no gain and unnecessarily pushes out a potential election.