@jerome Sure, #PierrePoilievre shouldn't have called the PM a wacko, and he should have withdrawn the remark once the Speaker asked him to do so. It's a lowering of the discourse, unworthy of any MP, let alone the leader of the opposition.
But let's acknowledge that debate in the House of Commons has been deteriorating for sixty years at least. It's not so much a matter of individuals, there's a structural problem. I think the underlying cause is that they play to the cameras.