> Saying that this situation is what pilots train for and they should have just used VORs and ILS reveals an overly macho, unsophisticated understanding of aviation safety. We've added GPS, ADS-B, TCAS, GPWS, TAWS, etc. because they make flight safer.

We've also added blind spot warnings, but you're still responsible for doing a shoulder check before changing lanes. We have automatic emergency braking, but you need to stay back as well (if it does not work, or if conditions are slippery).

GNSS also tends to be used with glass cockpits, going back to the late 1990s (e.g., Garmin GNS 400/500), which not only did GPS but also VOR/DME. How transparent is getting a fix between the two and still getting good RNAV?