I don't remember caring that someone took a picture of me with their Nokia when I know that they'll at worst share it to a handful of people via Bluetooth or try to upload it to a friend's MSN channel via GPRS. It won't be uploaded to Facebook, facial-recognized, and stuffed into a global database. Or visiting websites: I operate a website and I know you can parse which pages I viewed straight from the access logs. I don't mind, you can see what paths I took through the website and you might learn how to make a better flow. But technically, drilling down to such an individual user level is tracking based on personal identifiers and so would require consent under 2018's GDPR. I'm happy that it now does because I don't want Google to track every page I visit, and ~everyone uses Google Analytics because then you get perks like knowing what search queries you are doing well on (how convenient that google removed referrers for privacy)
I don't really have a solid answer -- why do I care about Facebook and Google but not about John "Malicious Sysadmin" Doe? -- but maybe it makes sense on some level. I need to think about it more still
As a result, real people are having real talk in the safety group chats where they know the members to som degree, IIUC.