He does leverage the risk that others take, but those others are also the people who collectively build society so as to require taking that risk. It's kind of tit-for-tat in a way.

>How can I take his advocacy seriously

You could just listen to what he has to say and consider whether or not it's true. His personal behaviour at the end of the day has little bearing on that. "He doesn't even do XYZ therefore I won't believe him" feels more like a rationalization one comes up with because one doesn't want to believe him in the first place.