You’re not wrong. And that’s what I personally do most of the time. I was specifically answering the question by the poster.
My goal is not to convert everybody and have them do things exactly how I do them. So even though what he asked is not what I believe in or do most of the time (I’ve done it in some programs) I still decided to answer it with the knowledge I have and how I would do things if I used that approach.
Furthermore, I’m not married to any one approach. I have principles that I apply most of the time (which also have evolved over time) but even those are sometimes put aside to achieve a specific purpose.
Take fat loss for example.
I personally believe that one should NOT use the lifting program as a fat loss tool. Use dieting and energy systems work to lose the fat, lifting to maintain (or increase) muscle mass and strength while dieting.
I feel that those high-volume, low -rest metabolic based lifting sessions are a mistake when trying to lose fat.
BUT I will sometimes use that type of training for a short fat loss blitz or the last phase with someone who needs to get completely shredded.