1. Most people aren't Usain Bolt or some other high level athlete. 2. Most of them are on some sort of steroid, hormone or peptide and 3. What is "portion control" if nothing other than an unscientific way of saying "hit/eat your macros"?
I do have a saying, if your only go is "not be a fatass", then sure, there are many, many suboptimal ways to approach this problem. However, if you care about more than just not being a fatass, there is more to think about. Not much more, just a little bit. Overall, though, it is REALLY easy to get this right if you just can articulate your actual real goal.
I'm just saying it's not necessary to think about "macros" until you get to an advanced level. Even then, it might still not be necessary, unless you have specific goals like competitive body building or marathon running.
I do have a saying, if your only go is "not be a fatass", then sure, there are many, many suboptimal ways to approach this problem. However, if you care about more than just not being a fatass, there is more to think about. Not much more, just a little bit. Overall, though, it is REALLY easy to get this right if you just can articulate your actual real goal.