So I'm a bit confused as to why Zangetsu (the fake one) is gone. I've seen a lot of people say that only the living can be Quincy or that konso removes a Quincy's powers. I'm not sure about the first one, but the second definitely can't be true. We see Quincy in Soul Society in the last arc, after all, and most of them were far too old to possibly be living humans. This seems to me like Quincy who had died, whether in combat or to follow Yhwach.
I'll concede that most Quincy lost their powers when they died, but I don't remember it being because of konso. I might be wrong, but I figured it was because Yhwach took their power back to redistribute. After all, he didn't have his empire there, so a Quincy in Soul Society wouldn't do him much good until he was ready to invade.
And, correct me if I'm wrong, but Ichigo has the same plot armor as Ishida when it comes to Yhwach stealing their powers. Neither of them are 100% Quincy, and Yhwach tried to reclaim the power of all the mixed-blood Quincy.
I mean, I'm probably forgetting something here, I'm just not sure what.
Great story, by the way! I'm really enjoying it so far.