2 years ago they had my son's class watch this show. My son told me about it and we sat down together and watched it on NetFlix, twice. The first time, we just watched it with nothing said. The second time around, we paused and talked about each topic. My son actually took some notes to ask the teacher the next day. Yeah, the teacher is a vegetarian. According to the teacher, it was just to show the students a different perspective; the standard canned answer when the school is questioned about it's teachings.
The proof is in the pudding.
That summer the family was invited to picnic and I had the pleasure of meeting this teacher. Now that was no place to bring up the topic but I did get a good look at this dude and yeah, he got a good look at me. If that life style is good for your health, you couldn't tell by looking at this dude. As for being an athlete , not even close.
Maybe that lifestyle is more healthy but it's no way to live.