LineageOS: what breaks? Banking. I have a fairly robust risk appetite, but rooting a device to install a closed-source fork of Magisk that hides itself well enough that I can spoof Play Integrity so my bank's app will run is a few steps too far in the wrong direction. So choose what you prefer: access to your money, or some amount of control over your digital leash.
I see no way forward after September that doesn't involve having two phones: one that mostly lives at home for the applications that absolutely won't run without maximum verification, and one for daily use. At that point, I might as well get a used iOS device for the banking stuff.
This fucking sucks.