While i do agree, i tend to be a bit on the cautious side, i update the maps because i see them as a backup option, if My Phone dies for example.
I also have an offline navigation app on my Phone, in case something happens and my Phone loses connection to the internet, its great with the always up to date features of google maps and other like Kit but lose connection to the internet and they become all but useless.
The zs ev navigation is not good but if its all you have its far better than nothing...even if you only use it once a year...
I also always carry Cash in case the electronic payment systems fail.....I know this might sound quite normal to a lot of people but in Denmark Cash is more or less never used...99,9% of all payment are electronic and almost no one (beside old people) carry any Cash...