The Skating Lesson and David Lease over the years

The comments he made about the victims of flight AA5342 were horrific. They were enough that he should be cancelled. However, I see people talking about how bad he was even before that. I don’t listen to podcasts and am a newer fan. What else has he done? I feel like I am missing context. Also, who is he? Was he a high level or professional skater? Was he just a guy with a podcast or was he involved in coaching or a federation?