I bought a cheap USB Bluetooth dongle decades ago and while the interface has changed in Mint over the years, I've always been able to use it to communicate with my ancient flip-phone to get pictures off it. In fact I was able to use it with some very rough and ready software to pull the texts off it at one point.

It probably also worked on Windows, because I've had both since before I switched.

The phone's camera got water damaged a while back and now all the pictures from it - not that I take many - have a literal watermark on them, but the Bluetooth still works both ways.

Can't vouch for whether it would work with more heavy duty hardware like a headset or speakers, but I guess it must be luck of the draw with a lot of these things.