I'm not going to refute or prove any of your "findings". Jack Hershey is deceased. I will honor RIP. The MIF-NG and the ET "competition" were before my interest was instilled in Jack Hershey teachings/methods. Volume leads price plays a significant role in my trading... I use a bastardized interpretation that works extremely well for me. Significant does mean it is the only component.
I will point out however, tax bills and real estate titling have no bearing whatsoever on the man's ability to teach, or the efficacy or validity of his methods. You/we have no facts about his family, circumstances, needs, wants, health matters, or other aspects of his long life, RIP.
As for Spydertrader, all I can tell you, though completely unsupported, Sprout is not him. If anyone, Sprout could be a medium for Jack himself. LOL. (Thats a back-handed compliment, Sprout!) I do know way back when, several Elites met up IRL with Spyder (and Jack for that matter) at various events. Sprout persona never had an exchange with Jack in any format.
Please allow Jack Hershey to RIP. There are many ET threads and 1000's of posts for self-teaching, in addition to a few ET'ers that can, will, and do help those genuinely interested in learning about Jack Hershey and his methods.