I try to avoid "smart" appliances and if the manufacturer forces the "smart" stuff, I never enable it. Even my induction hob would like to connect to wifi (no idea what that would be useful for), but that's just not happening.
My washing machine advertises its remote start feature to try get people to use the app and it’s like… I need to physically load laundry into the machine so I’m already going to be standing there when I want to start it.
We don’t have smart appliances but I’ve recently switched to an electricity plan with a really cheap night rate for charging my EV (1 cent per km!). We often fill and then schedule our Bosch washing machine and dryer to come on at 2am. No app required.