By voting him in, the American people have given him 'a chance'. Though, so far he's quite obviously failing to live up to the standard.

I'm not a fan of Trump, but Chappelle did the right thing, Trump got voted in democratically, and Chappelle was merely acknowledging that fact by saying those words, he wasn't endorsing Trump, it was more of a message of hope, for what was a sea of despair for many people, to say it's going to be ok.