Intermittent fasting works. Talk to people that can show you results. Enough with the "theory".
I've heard many theories from obese people and it's always bullshit. Everyone can find far fetched theories for anything on this planet. That's why results talk. You know how they say "money talks"? Same here: results talk.
I, on the other hand, can tell you what works 100%, based on results (like 8% bodyfat, in very good shape):
Eat clean food, exercise daily, eat in 6-8 hours per day. Don't eat too many calories in total.
Do this for some time and I guarantee you will see effects. It only takes will and it's not rocket science.
Most bodybuilders that I see are people that are just, you know, dumb. And they can do it. So I promise you it's not complicated or anything. So I don't know what's stopping people from doing it.