Physically disabling WAN can be a workaround, assuming is can be done and reverse without damage. But it’s not a good solution.
Manufacturers have ways to degrade experience/features when the owner physically disable WAN: deny features and security updates (by doing OTA updates only), drag their feet or void warranty if WAN is disabled, design some features to be unnecessary dependant on some cloud/onlin service (eg navigation, media features, …).
Physically disabling WAN can be a workaround, assuming is can be done and reverse without damage. But it’s not a good solution.
Manufacturers have ways to degrade experience/features when the owner physically disable WAN: deny features and security updates (by doing OTA updates only), drag their feet or void warranty if WAN is disabled, design some features to be unnecessary dependant on some cloud/onlin service (eg navigation, media features, …).