I don't know what's funny about that. It's just a fact that if two groups fight they will have people backing them.
Yeah I mean Hitler was this guy whose armies were murdering people but nobody is perfect so let him be, I suppose.
And?

Well yes if Hitler won, then death camps would have been salvific for his people.
It's not really that. People have a right to spend money as they see fit. If this douchebag wants to be edgy by thinking he knows Putin is really a good guy, he won't get any of my money. I'll also try to make sure he does not get to benefit from the proceeds of my taxes. He can go and pound sand. He can either be a musician and shut up, or he can apologise for murder.