I wasn't talking about anyone here and that does make the writing less terrible.
That was really just terrible execution on Kishi's part. Ya see, you have the elements for a good explanation there. Oro gave Sasuke chakra, but Kishi wanted to save that surprise for the Itachi fight.
Izanagi existing wasn't bad. Izanagi being such a convenient "I WIN" button was awful writing plus the explanation for it was just stupid in that if you really thought about it didn't make sense.
Don't you like the lulz?