"I love riding the bikes. It's a constant conflict with me; 'Is it worth the risk?'"
I would say the answer for him is no. If I had that much anxiety regarding motorcycling, it wouldn't be for me either.
Crashing is not something most people do intentionally. And how you crash is probably not something you can control anyway.
So rather than learning how to crash, it would probably be better to learn how to avoid crashing (i.e. training), and ATGATT.