I have a low end Bose bluetooth speaker that connects up instantly to any of my powered on devices (2x Macbook, iPhone), and can switch between them seamlessly with a button press. I've also never had any issues with Sony WHM1000XM* headphones regarding bluetooth across these devices.

My AirPods frequently hop between my MacBook and iPhone without asking though, because the other device played a split second audio clip.

Strong YMMV I guess.