The reference to safety was simply psychological. I´m aware that handsets GPS are for VFR use only and with auxiliary functions.
The questions is: Wouldn´t u like to have the latest tech gadget when u are flying? or do u prefere flying forever with your old 55?
Launching a new GPS handset every year instead of doing less periodicaly but doing it better with all the features could lead to a phenomenon like MS.
No one is obliged to change GPS every new year´s day but u have to agree that your life is safer with 396 rather than 55( forget the free advertise).