I'm sure I'm wrong, perhaps not... I think I heard somewhere that competitors can wear supershoes at NCAAs because the NCAA's a law of its own.
I checked the NCAA rules and it seems that you can wear any stack height.
But I saw a bunch of other amendments separately where the NCAA made adjustments to align with World Athletics rules (but not about shoes).
But if stack height rules don't apply, wouldn't that invalidate all WA-eligible performances? Just for people wearing invalid shoes? All the results from NCAAs seem to be on WA website, for eg Dylan Jacobs.
disclaimer I am not a lawyer, a journalist, or any form of expert