Hmmm, how about this:
rookie_e
joined 2 years ago
Only apps with root can see the private app data in /data/data/ or /data/user/*/ that stores your app preferences, login info, databases, etc.
Without root, you can have some extra permissions by installing Shizuku - you will need adb to grant Shizuku those rights (this app is used to give those permissions to other apps supporting Shizuku - check those here https://github.com/ThePBone/awesome-shizuku ). For example Swift Backup works best with root, but without it it can still backup at least external app data (located in Android/data)
You used to be able to do proper backups via adb, but now you rely on app devs using proper backup methods via Google drive thing, and very few of them do.
If you're from the US, you're probably burnt by your mobile providers. I don't believe I've heard any horror stories about esim in my country and our neighbors (except for the fact that you still have to pay $3-5 to switch to "esim", as if you are getting something besides a string of numbers)
Here is my use case: 0. I have a device with 1 sim slot
At least on Pixel phones you can have a physical and e-sim card both active at the same time, and you can choose, for example, "sms and calls default to 1, mobile data default to 2". There is an option to "switch to another sim for data, if the signal is bad. (There are talks about simultaneously active several e-sims, but it's not here yet)
Even if you discard a security angle (sms verification should not be a known number - "restore sim" attack is quite common for a targeted action), a lot of people can benefit from "1st physical sim has great calls plan/ coverage, 2nd sim has cheap internet"