alright, so I shot this follow-up video on Monday, to try and clear up some of the confusion. I was waffling on whether to post it, after seeing this thread nearly devolve, but decided not to let a few unnecessarily negative comments change my approach (if we all did this with our music, we all would've quit by now, I wager!
anyhoo, I use the first few minutes to do some clarification, then demonstrate that you don't need to know anything about your note/chord choices in order to come up with something usable.
it's long, but here are some handy-dandy timestamps, for those who don't have the time or inclination to watch the whole thing.
First ~5 min or so: clarifications+introduction
27:15: end product after playing around for a little while+final thoughts
*for anyone who just goes right to hear the end product, the guitar is in a vastly different tuning than I'm used to, which is why you might notice the tuning/intonation is wonky.