I watched it and thought it was a bit of a disservice. It didnt seem as if he messed around much before filming the video.
Yeah, I find that to be pretty common in most of these types of videos.
I still link them if they are positive. I hope the excitement of someone's first impression makes others check out the related videos... where there is a lot deeper material.
And I learn something from every one of them... mostly that the "Press F1 for help" is not nearly obvious enough.
And in this case, I learned that for some people "Initializing block packs" takes a really long time. I need to log some timings during startup and fix that. If even the default block packs take that long to init then I shudder to think what it will be like with custom block packs.