Bodybuilder bubble gut is caused by growth hormone and insulin, not just eating too much

Clips of guys with shredded arms and chest but a belly that looks 6 months pregnant are all over my feed again. Every comment section says the same thing: it's high-dose GH and insulin literally growing their intestines and organs, so it never goes away even when they're lean. Other people say it's mostly just massive food volume, bloating and weak transverse abs, and that the GH organ-growth story is gym folklore. Which is it?