looks like pretty basic stuff
That's because it is! I said on this same page that this is when AB was first starting out (or very early into it). These videos (put together from snippets of Instagram videos) are at least 2 months old.
Again, these drills are for beginners, their drills get increasingly difficult. This is child's play compared to the things they have put AB through since these videos were made. It's easy to find out how much more they do if you look up these people on other social media.
This video(s) is pretty much what AB could already do... we are now 2 months later, if it works, he should be much more advanced.
I don't know if it will work but I know they work with some pretty good NBA/college players, I would think if they are getting so many good players they must be doing something right. It's going to be a wait and see on AB but this video only shows that he's working on it, not how he's progressed.