They presume it's safety in numbers too... when actually, they're just the dumb masses who have been fattened and poisoned by the lure of junk and excess. Nothing unique or special, I think that's why they get ever so riled by the reminder of what they're so far away from. Literally months or possibly years worth of 'hard' work and even then, they've likely ruined their body (but of course, like to claim the extensive damage as scars rather than the occassional blemish of life). Hence why it's too hard, too 'impossible,' and try to argue away the shame. We know different. We know living. We know the 'real' way to have a body. Dieticians and nutritionist must hate people that literally have worked it out themselves. That, unfathomable impossibility of calorific maintenance! Reminded of their failure. Reminded of our success. Hence... ATTACK! Anyway they can, which, as you stated, is usually an ad hominem attack of some sort. They perceive victory based on numbers and continuation of 'safe space' for playing at fatshun or whatever the interest is alongside their extensive indulgences of food and drink.