I have to agree, total nonsense.
There seems to be a rash of younger content creators, trying to pass themselves off as woodworkers, trying to tell us we're stupid.
From the Glue myth silly person to this ridiculous video.
None of these testing rigs or scenarios come close to real world use, just nothing more than click bait by a sophomoric presenter.
Funny thing is that no one builds seems to things with glue only butt joints, I wonder why?