In most cases of morbid obesity surgery really is the only way out. They can't stop, it doesn't matter how much it angers you, they'll literally die because they can't stop.
It is not his size, it is the pity party crap, blaming others, being upset at fans who give him good advice. I am not going to lie, I carry more pounds than I want. I am super depressed before got worse after. But I own it, I don't ask for pity. If someone gave me great advice I would not complain.