A Reddit user Reeceeboii_ highlights, any time you share a song from within Spotify, it generates a unique tracking URL linked to your account. Spotify can join the dots between the sender and receiver whenever anyone clicks on this unique URL. People have allegedly noticed that Spotify has retroactively filled out the history of song shares in the Messages feature, which is possible through these tracking URLs.
Yet another reason why privacy focussed tools should be automatically stripping those out. I use an app on mobile and do it manually on desktop, but it’s still tedious at times
Which app do you use for that?
This one
https://github.com/TrianguloY/URLCheck
You set it as the browser and it intercepts any links you click on so you can edit them. You can set some default actions, as well as share links to the app