Yeah, I see gaining lean tissue like welding. When using sticks, there's a ton of slag to be chipped off, and sometimes grinding, using wire feed there is no slag, but one might have to wire brush it to reveal a beautiful bead.
We've seen it time and again where we gain hella weight only to piss it all into the toilet, or left to deal with fat. At least the fat falls off fast more or less.
I like the perspective of the author, namely, to improve rather than bulk. i like this angle because allows one to focus on a part or parts. For example, "I need to improve the size or separation of my quadriceps." Will I need to go on a traditional bulk eating 5000 calories to do this? I don't believe so. Intuitively, lean tissue will be gained even at a caloric intake marginally higher than ones TDEE. A hunch. Then there is training style and technique, oh, and frequency at play. Compounds of choice are in my opinion far less important, at least that's my opinion as I haven't personally experienced each and every one, nor do I intend to.
As you put it so well in another post, it's a mental game more so than a mere physical game. Perspective is just as key as diet, and training.