Even if, for the sake of argument, this is their sense of humour, it seems to me that if more people called him (and men like him) out on his normalising of misogynistic violence, we would go some way to dismantling the acceptance of toxic masculinity.
If his humour was racist or homophobic he’d get a sharp “not funny” from family, friends and followers but DV jibes are still considered acceptable.
And it is massively undermining and scary for a victim when an abuser jokes or displays dominant behaviour or mild violence or insults in front of other people and it’s not pulled up. It can be a massive factor in altering the victim’s world view and sense of self worth. Everyone saw him do X and nobody reacted so it can’t be that bad
In my lifetime I’ve seen the acceptable boundaries of humour shift to exclude racism, homophobia(Friends) , slut shaming (Frasier), fat shaming, transphobia (Little Britain) and on a behavioral level seen drink driving become completely unacceptable. Public attitudes matter.
So regardless of whether Michael Buble is an abuser or just the height of 21st century humour, his videos perpetuate misogynistic violence. That’s not cool, man.