Theories galore this arc huh? I mean I aint complaining at all. This is the shit!!
Anyways, about the Doc somehow avoiding most of them despite being 89 (but is he REALLY 89??? 🤔) has to do with his Stand PROBABLY having Space Manipulating abilities. Assuming that Araki continues with Main Antagonists having a common theme (like in PB Universe involving Time) then Space MIGHT be SBRU's common theme. But who knows really cause with how things are things could LITERALLY get topsy-turvy and go wacky on us! There's still Caato to talk about and there's still the WALL EYES and like the NEW ROKAKAKA sooo who knows!!
One day, Araki is gonna be 89 years old, when that time comes, we fans should troll him with this chapter (or who knows if its finna be animated in the future 👀)