In all fairness, we lite pukes have some neat stuff besides the EGPWS/GPWS
I always liked my terrain following radar mode and coupled with the projected map display with INS and a doppler backup. This was back in 1972 and you can guess what jet it was ( single seat, single engine).
The recent incident is the first one I have seen about a false warning. I guess there are many that are not reported of recorded.