I would beg to differ.
Intermittent fasting - at least the style I favor is - eat within a window - I currently do this in a rough 6 hour window from about 12 to about 6 pm.
I feel better and my body fat went down. You can merge this with a more veggies and lean meat choices, but that’s your choice.
I don’t doubt that some intermittent fasting might be beneficial, after all, most of us do it every night.
But the extreme fasts that are often promoted are just silly. Three days without eating is insane.
I do similar but between 14/10 and 20/4 and it works well for me