User blog comment:Xilinoc/Ch. 565 (Mangapanda is run by lazy barnacles)/@comment-1268838-20140122195654/@comment-5693502-20140123225525

Note I said "Fullbring-like". As in probably not Fullbring, but similar to Fullbring. And, since it's only my speculation, who's to say Yhwach's parent(s) didn't get attacked by a Hollow ? Nothing says he did, nothing says he didn't. Also, who's to say that one couldn't have a Clad-type Fullbring that has a power like the one Yhwach possesses ? Fullbringers do indeed manipulate the souls contained within matter. Who's to say Yhwach couldn't manipulate the soul within himself ? There's not enough information to prove my speculation and yet there is not enough information to dismiss it. I was only hypothesising. You can't say I'm wrong when I say he can steal powers from those he has given his soul to. You also can't say I'm wrong when I say that all a person's knowledge, skills and talents would all go back to Yhwach when the person died. Who's to say that the Quincy abilities were once someone else's ability altogether and Yhwach took it for himself when they died ? There's nothing to say Yhwach was born with the power to absorb and manipulate reishi; what is said is that he was born with the power to distribute, and then reclaim, pieces of his soul. And like it said in the chapter, he is the only "Quincy" who can do that. Again, until enough information is revealed, my speculation can't be disproved or validated. So no, I'm not rewriting the story, just trying to answer some of the questions with the information we've been given; so of course there are going to be holes.

Although I can partially agree that if anything the Wandenreich members are barely Quincy in comparison to Yhwach, as he their creator.