Its absolutely a good argument against fragile IoT devices that have no local/offline mode and the ever increasing lurch of internet requirements for our daily life.
I’m not sure my phone does much of anything without an internet connection. Yet it is my primary banking and authentication method (via BankID).
EDIT: Theodore Kaczynski is the unabomber… well, thats an odd name to drop and maybe not an ideal candidate for life advice.