I see this as a reluctant tribute to the skill of a master salesman. The Dr. isn't a doctor, and he isn't a stand up guy either. But he's convinced some of the people in the audience that he is. The band members raising their glasses to him is saying, "Hey, you gotta hand it to the guy. He's a total phony, but he gets people to open their wallets, and you know how we struggle with that."
I see this as a reluctant tribute to the skill of a master salesman. The Dr. isn't a doctor, and he isn't a stand up guy either. But he's convinced some of the people in the audience that he is. The band members raising their glasses to him is saying, "Hey, you gotta hand it to the guy. He's a total phony, but he gets people to open their wallets, and you know how we struggle with that."