To me, that's just a failure on Bluetooth spec part, period. All reasonable bluetooth devices should come with a selector which allows you to choose which device to connect to [1]. Instead, there's this crapshoot, where, if there are multiple bluetooth devices near you, you'll get paired with a random one, and will have to disable bluetooth on it to roll the dice again.

[1] For cheapest devices, a physical button that goes to the next available device would still make a world of difference.