I already recommended you do an upper-lower split or full body routine and others encouraged you to follow a bare-bones, stripped down routine as well.
You didn't like the advice.
I believe this guy could have made the same gains with less exercises. A barebones upper body workout can look as simple as this: bench, row, chinup, press (any variations of these), tricep extensions and curls.
A lower body workout can be leg curls, squats, stiff legged deadlift, lunges, calf raises, abdominal exercise. And as I said in another post, sure, throw in am isolation exercise somewhere if you must.
A full body workout can look as simple as this: bench, row, curl, squat or deadlift, press, chinup, abs, and so on.
He looks good.
He probably instinctively knew how much to eat for portion control after considerable time with this lifestyle. Eating a bit on off days is fine too.
IF is fine, if it suits one's lifestyle and eating preference, but it's not special, I believe.