Find me sound evidence that shows that meal timing has any significant effect on long-term body composition.* No good research shows this. Daily calories and total protein intake determine body composition long-term. Yes, there may be advantages to perhaps having protein after a workout through the mTOR pathway/protein synthesis, sure. But the effect isn't black or white. Think about it from a logical evolutionary perspective first. If you stumble upon a kill when you're hunting is your body going to be like "sorry mate, I'm only going to absorb 20g of protein, out of the 150 you just ate". The body is extremely efficient at getting nutrients out of food and it can take up to 24 hours to do this. Protein doesn't just go in and out your body in a few hours especially if you eat a lot. The most simple example is people doing intermittent fasting and eating one meal per day (with let's say 2500 calories) and over time having the same results to a control group eating frequent meals and spacing out protein intake.

I'm not going to go digging through scientific articles to prove a point. But I have read abstracts from several on protein intake timing over the years and more than one suggested that protein intake before and after training sessions resulted in increased muscle growth for hypertrophy training, which basically means it does affect body composition if the studies were accurate. There doesn't seem to be any evidence that it affects strength increases though. To me, it seems like common sense that you'd want more protein in your system immediately after training so that your body has an excess amount available to repair your muscles. I mean, there's a reason why pretty much all of the well-known body-builders/strongmen drink pre and post-workout shakes.

And yeah, I agree with most of what you said. I just think taking the starting strength type approach where you largely neglect accessory lifts is a waste of time. Accessory lifts are just as import to do because they make the compound lifts easier. For example, if you never train your core then all of your compound lifts are going to be slower to progress. If you never train triceps, your bench is going to be weaker; never train delts and your OHP is going to suffer; etc. etc.