Pretty gross and classless.
I personally have policy issues with the Liberals, and a couple specific areas where I think they let us down, but this is just pure electioneering politicking that completely ignores the human beings involved. Opening up with "Justin Trudeau is a bastard man who made things worse", instead of "we may not have agreed on everything, but I do want to thank Mr Trudeau for his years of public service in office", is just flat out small and gross in my mind.
It's something PP would do, it's something Trump would do, it's not something Jack Layton would do, and it's quite frankly, not something Trudeau would do. If nothing else, the responses to his resignation have made it clear that he was the only party leader who actually had basic leadership qualities.