What the parent is describing is an advanced flow, that can be helpful if you have lots of computers & need to juggle bt devices.

Setting up a hotkey just takes pre-work to setup. This workflow is optional. But it saves time & effort if for some reason you are one of the very few users who moves devices around a lot.

...which, also, is exactly what mine do with Ubuntu. I used bluetoothctl to pair them once when I first got them, and when I turn them on Ubuntu automatically connects and switches the audio over. I don't have the same model headphones as GGGP, so I'm guessing it's a problem specifically with that model's implementation (Edit: or from another person who has the same model and no issues, perhaps some combination of hardware/software specific to that user).

> Pairing is a one-time thing,

You ignore the two scenarios I face regularly, that stem from me having lots of devices and lots of computers & wanting to switch around what's paired to what.

We both seem to be trying to defeat the notion that using Bluetooth in Linux is hard or special (it's not at all, it works like anywhere else, and these reports of it being hard are from people with at best extremely small domains of experience & knowledge).

I was trying to add that Linux has further upsides for when you do want to go further, and highlight & interpret the parent post to show how I have those issues & describe how adding hotkeys (something only Linux does) would help me, an advanced user juggling many systems & device. I've clarified my post to mention that auto-reconnecting will just work on most scenarios (but I get why some folks might think it's cool to have hotkeys).