I couldn't watch more than a minute of that guy talk. That said...

Counting Macros is not flexible dieting. Counting macros throughout the day isnt the easiest, and if your trying to eat 3000 calories in some split P/F/C macro ratio, how the hell is any of that flexable.

IIFYM, is BS in my opinion. Some crap made up by bodybuilding.com Forum douche bags. There's so much more to it, such as nutrient timing and so much more at work such as insulin.

If your not going to be strict and precise with your diet, then eat to grow, or eat to lose. Don't count macros and break em down in some special ratio, only then eat whatever you want as long as it fits in. It's ass backwards.

I'm not a big believer in that you can tune a diet in just with macro ratios anyway.