I don't know about you but we fly any NPA (incl. VOR, NDB, LOC) in the exact same manner as an RNP (or RNAV, to use other terminology) approach. LNAV/VNAV magenta highway bang on the centerline. Yes, you should monitor raw data but I am sure you'd get away with it your whole career if you didn't. So why curse the NDBs when we praise RNP appr.?