Rest in peace elbows & wrist...NO. The focus is not all on them if you know how to do a exercise correctly.
Quite a few systems that take a movement from the full ROM (almost) to partials at the top range. And all in one extended set. 1 or even 2 sets max in anyone training session. I, and others, have done it in a PR, starting from the top pins at first. But have began at the full range at the bottom (Need two pin pullers standing by..quickly). Don't ofter work back down again, like the guy said in the video. This has also been done with DL's or squats for PL'ers.
Yeah, building those boards would really require a engineering feat, something akin to building the pyramid's. Almost impossible for a normal person. Of course there's always a bandsaw/table say, screws, nails or even liquid nail but that would require way too much thinking for most GB'ers.