What is the mess of 14 Pro? I don't see anything wrong hardware-wise ... it's just the iOS, but that's obvious why... because most of the team is focused on the RealityOS.
Flashing horizontal lines
"Sim not supported" (would cause phone to freeze up
Storage full issue
Humming sound from camera (autofocus issue)
Issues with 5G coverage (slow or constantly dropped calls)
Transferring data issue (would brick phone)
Camera shaking rapidly
Very poor battery life
Most of these issues have been acknowledged by Apple. And they weren't just iOS 16 issues as only the 14 models saw these problems.