I love this theory; very, very well thought out. But as others have written, it's just a theory, not what Shatner or the franchise intended/presented.
I kinda like the "STV as Kirk's dying thoughts on Veridian III" aspect though. Play this out and you get TVH followed immediately by TUC, then GEN, then TFF as the true, if surreal, goodbye from the original cast. Not sure how I feel about this.