That's an interesting theory. I'm of two minds: 1) as per your theory, Neil found his way back to drumming and music in some capacity and went all in, i.e., playing every day and maybe even recording the work or 2) he simply let go of that part of his life completely. I tend to subscribe to 2). I recall reading about another drummer (a notable drummer but I can't recall who exactly) who met Neil about two years ago and apparently Neil told him that he wasn't playing at all and didn't even have a drumset in his house (but had a kit to play on at the DW (Drum Workshop) head office, which was a ~30 minute drive from his residence in California). In any event, I'm at peace more so now because the body of work that Neil left behind was massive and truly exceptional. If he had one more studio album or live performance in him, I don't think that would have augmented his legacy because it was already established and as solid as anyone could build.