just because the appliance you bought offers an internet connection, it most likely doesn't need it for core functionality.
...until it does.
It's not unprecedented for manufacturers to lock hardware capabilities behind software controlled paywalls.
When I was shopping for stoves, there were a couple of models with "features" that were not available unless you connected to the internet and used their app on your phone.
We chose a model that didn't have any networking at all.
How about having the self-cleaning mode on the oven require you to use the app?
Yes, that was one example we saw when we were appliance shopping.