I'm not sure, but I suspect Jim is too savvy a writer to hinge the entire rest of the series (from Mirror Mirror onwards) on a bunch of multiversal twists&turns, on 7 Harrys (Harries?) and alt!Kemmlers, etc etc etc ad infinitum.
I think most of his readership would find it not worth following the complexities.
He's already -- IMO -- on the borderline of "too complex" with 1 multiverse novel + 1 time-travel/retcon/repair-the-Sacred-Timeline novel.
🙄 he already did technically, Demon Reach.
Tho as is usual your misconstruing a simple concept and plot twist that doesn't "govern the rest of the series", that's the greatest thing about the DF, you can enjoy it on many levels. Plus he has the time travel book last? Heh, I disagree. What I said was a tin foil theory to begin with, I literally started with an apologetic don't try because it's nonsensical. To share your doubt immediately after our ahem, history is bad taste. Opinion vs opinion that's enough said for me..
However be aware "I'm not sure" is synonymous with "I don't think". And when people try to simply unname a theory as viable based on that.. well, the saying goes,",those who say you can't shouldn't interrupt those who already are".
And this has been a point of contention on how people come at each other from it has been the gathering of much heated debate and mod warnings for years. Because it is not discussion, it does not promote discussion. And it
should not exist here. It drives people away as is it's intention and is a perversion of etiquette, designed as such. Quite frankly, I'll go all ten rounds with anyone who disagrees and all day after. Stop trying to bully me, please and thank you 🙏
(Oh and you have no idea what the original theory was, because seven of nobody is running around when bodies are being tossed behind them to escape.. and proper etiquette would be to do as I asked previously and be curious about that)