If this can happen, is it possible that once mandatory developer verification comes into effect, all 3rd party apps will be uninstalled at first and require a re-install?

Concerning this specific case, NFCGate is a tool on which malware (family) titled NGate by ESET is based, thus likely causing a false positive.

Oh, and no bypass is available anymore (aside from disabling play protect):

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[+] 25 points 5 months ago* (last edited 4 months ago) (1 child)