If someone puts a posting on the net, they likely have to accept that there will be reactions to it. That said, I am not looking forward to a fist-fight with a wanna-be-monk, so distance is probably the key. Dont you feel a fist-fighting drinker is a rather comical mindfulness practicioner? A bit like the gay nazi, or whatever stereotypical contradiction you wanna imagine.
He did clearly state that this was before he became a practicioner and this is (one of the things) that led him to it.
To be fair the diagnosis does align with the authors complaints.