Right now, in my Reading Queue, in Safari on iOS, in collapsed view, the Posted date for every single story is 10/16/2021. Every one of them.
This is the Posted date that's on the same line as the Added dated. When I expand a story for more details the Posted (and on stories with multiple chapters Concluded) date is correct.
(FWIW, I don't find the Added date of value. If you decide to remove one of the Posted fields, I'd prefer moving the Posted/Concluded/in-progress info to where Added/Posted is now. I'd be nice to have an indication of whether a story is complete in the default display, the way there is on a larger-screen browser.)