I like a phone that's able to just run little Bluetooth beacons when it's powered off. Especially ones that can't be disabled except by disassembling it.
Depends if this is already baked into the firmware the device shipped with and is just being pushed into user space with a software update, or if the update is also pushing out the firmware to add it.
If it's former, then yeah, probably SOL.
But if it's the latter, it might be possible to get avoid and even get Android 15 ROMS that strip out those parts.
I'd be surprised if custom ROMs were a thing on the Google Pixel, which is the most likely phone company to allow such a thing to begin with. After all, their Pixels are still technically developer phones, AFAIK.
I wish pinephone pro's weren't booty. Hardware switches to cut power to everything from the WiFi module to the camera sounds pretty hot in light of this.