Does Joker know about the loops you think?
Or is it just an other Buddhism reference/playing on Wonder being a fellow wildcard? Since the P5X/P5 crossovers are full of them.
I'm more inclined to think it's foreshadowing and/or a reference to Wonder being a wildcard, rather than specifically indicating that Joker knows about it, personally. It's possible Joker does know something, and this was hinting at that, but it seems like they've generally tried to keep these crossovers as canon-compliant with the original games as possible, so Joker having secret additional knowledge seems like it would contradict that... though you never really know, haha!
That said, I definitely do think it is meant to relate to the time loops on a meta level, whether Joker's aware of them or not.


















