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):
Most of the time they do spell things, yeah, then there are the weird legacy holdover ones. The *3001#12345#* iPhone code is an old Nokia engineering screen code that probably only had meaning to Nokia S40/S60 engineers.