overturnlandmass It's highly coincidental that several people all with P8 Pros suddenly have a hardware failure simultaneously with a new build release of either AOS or GOS.
It's less surprising than it might think.
Some problems manifest only after a reboot, and many phones are not rebooted unless there is an update. Also, downloading and installing an update stresses some parts of the phone (e.g., the flash storage). All in all, it is not surprising that many problems are noticed after an update.
overturnlandmass That leads me to a new line of questioning: did Google make a change to the baseband chipset driver that GOS doesn't like or that maybe doesn't port correctly from older versions of GOS as they upgrade through the builds?
I don't believe that the baseband (cellular) hardware/firmware is involved in Bluetooth or Wi-Fi.
It is always possible for there to be a firmware or driver regression. Recently there was one that resulted in Pixel 7a's having reduced Wi-Fi throughput, for example. But when that happens there will be a lot of reports here, because each device type has many instances in the GrapheneOS "fleet".
In the other direction, there is a steady trickle of occasional reports of Bluetooth and/or Wi-Fi failures, on devices of all types. That is consistent with a small fraction of devices experiencing a failure every now and then.