I’ve not tried it but if you’ve got some electrical contact cleaner you could spray some in, move it around a bit and see if it resets back to centre. Let it dry out for a bit before powering it on.
As far as I know a lot of controllers (joycons, DS5, etc.) Have the same issue as they all use the same internal part.
You could possibly order one and have a go at replacing it. Seems a lot for something defective pretty much right out the box though.
Fair point, I also make a point of only buying ones that have a removable cable for that reason.
I did also recently, as a geeky project, get some Mackie mc-100 headphones and mod them to take a removable 3.5mm cable.
I have too many pairs of headphones and have been buying more wired ones rather than Bluetooth as they just don’t last as long (they are convenient, I’ll admit).
The 3.5mm Jack is just so handy to have ratger than a dongle (SD card for storing all the music helps too).
I use bxactions (not FOSS) to use it as a play/pause button. Can easily pause and skip tracks keeping the phone in my pocket.