So you have to leave bluetooth on, which means your device is broadcasting an active bluetooth signal.

https://www.nytimes.com/interactive/2019/06/14/opinion/bluetooth-wireless-tracking-privacy.html

If any random shop can use any phone's active bluetooth to track and profile every user that's i side or nearby, I don't want to have bluetooth active when in public. Genuinely not worth it just to fi d some glasshole pervert when my own eyes can do the job without giving away any more of my data. That's what I'm on about.