My god, I upgraded from an S9 to an S22 and seeing the fingerprint scanner on the front baffled me. With a screen protector on I unlock it on the first try maybe 25% of the time
If you have issues with it detecting your finger try doing the "Check added Fingerprint" thing a bunch, apparently it can scan all of your finger more accurately, and get to the very edges and weird angles that the original scan never got. Seemed to improve the accuracy of mine a bit (never had big issues with it tho)
My understanding is that these fingerprints are specific to your device and don't get stored in the cloud. If you buy a new phone, then you'll have to rescan your fingerprints.
Knowing how Lemmy is, I'll probably catch shit for this, but it's the truth:
I just don't care.
I won't say you're being paranoid because, I don't know for sure that there won't be repercussions, but I don't see a realistic downside considering the cops and FBI already have mine for clearances.