Subpar Spatula
Banned
Don't invite him on your late night talkshow?
There is nothing that obligated Maher to do this in the first place.
But Milo has a large following. He's grown and continued to grow his following without talk shows already.
I believe this issue is bigger than talk show hosts, so the only way is to have governments condemn this type of behavior.
It's very similar to Trump being on Fallon: that wasn't the problem, the problem was a man could say degrading things about women and still be cheered on by government officials.