User blog comment:Xilinoc/Ch. 683 - The Dark Side of Two World Ends/@comment-25359524-20160721233111/@comment-24531362-20160722143202

Bleach is very much not above criticism. It gets real dumb, all the time. And me and Xil, and others pretty regularly point that out too.

As for the Aizen issue, we have to consider a bunch of things: 1) Aizen's illusory power was said to be absolute; even people who knew they were under his hypnosis, like Hitsugaya, could not see through it; 2) Aizen was implied to have become one with his Zanpakuto during Deicide; 3) Aizen has affected Yhwach's perception of reality before; 4) Yhwach has admitted early into the paneltime existence of The Almighty that there are things he cannot see. A combination or conflation of any or all of these things could lead to his being duped here.It is pretty consistent if you look at the long game.