I am not downplaying the psychological effects of obesity but....Willpower is quite literally the ability to overcome your hormones/emotion and resist social pressure. It IS all you need, it's just really hard to learn. Especially nowadays with the societal pressure to be hot and how depressing the world is in general.

Comparing obesity to a cold is a false dichotomy as you most people can't simply avoid asymptomatic carriers. But if you insist on the comparison, we were absolutely vicious to people who got COVID because they chose to not wear masks (and rightfully so). I'm not suggesting we SHOULD be similarly mean to fat people, though.

I want to reiterate I'm not looking down on anyone for having weak willpower, mine is shit when there's a sweet treat in front of me. But I lost 5kg last year just by practicing at the grocery store. If there's junk food in my house, I know I'll pick it over real food every time. So I choose not to buy it.