Is diet culture for idols enforced by general public or kpop companies?

I feel like everyone likes to demonize and blame kopp companies for enforcing strict diets onto idols. I'll admit I did the same until I was watching twice's survival show and the rude photographer lady called jihyo fat. I was so shocked and since then I've been noticing how the general public reacts to idols that aren't stick thin.

Remember the hate Kyla from Pristin got? The hate Joy/Wendy got for not controlling her weight? The hate that Lia/Nancy/Giselle got and then the praise she got after losing the weight and how she looked "so much prettier"? Even Jiwoo from Nmixx was fat shamed and she's literally a 16 yr old. Queen IU was called a "pig" at age 15. People pointed out Jeongyeon's weight gain after her neck injury. I could literally go on and on.

When kpop companies debut idols that aren't sticks, they receive extreme scrutiny from the general public and are seen as visual holes. So who's really enforcing diet culture? Kpop companies who just view idols as products and see idols with weight as "faulty" and needing to go on a strict diet or the knetz and sometimes international fans who body shame idols that aren't sticks?

Obviously I'm leaning more towards gp but discuss.

both. it's a cycle

companies debut skinny idols => everyone thinks that's pretty and that's how girls should look like => young people get obsessed with diets and being skinny => companies debut an idol who doesn't look like spaghetti => the public bashes them because they're not used to accepting celebrities looking like this => companies debuts even skinnier idols and the cycle continues

the obsession with looks is deeply rooted in the Korean (and not only) society. it's no coincidence Seoul is literally called "the capital of plastic surgery". if you don't fit the standards set by the community - both celebrities and ordinary people, you'll suffer.

both - company has a certain requirement + the idol beauty standard pressure from the public

Both. I’ve seen content where idols are told they need to maintain a certain weight or worried about their weight and when people call them a fat pig or make comments about how fat they got on lives.

I think it’s both but I think the general public takes the bigger blame. I’m sure diet culture didn’t start with the kpop industry but companies know how vicious the go could be with their criticisms so to avoid that, they make sure their idols fit the go’s ideal image.