So, what he’s saying is that Obama is Hitler, and that when he (Kennedy) wrote that decision he became one of Hitler’s enablers.
I don’t think Roberts is dumb. He couldn’t have said anything that stupid by accident. We all know, or are 99% certain, that he wrote that decision because he was blackmailed into it, presumably with the threat to take away his adopted Irish children.
The Nuremberg Trials found that it’s not enough to say you are bound to follow the laws, no matter what. Not when the laws in question and the people who make them are just plain evil.
This is Kennedy talking, his children are grown.
Roberts dissented in Obergefell.