Only if you remembered to put water in it and happen to want hot water at exactly the same time. Besides, a normal kettle boils in a minute so it is hardly difficult to just flick the switch on the kettle on when needed. Certainly less effort than fiddling with some app.

First ‘public’ webcam stream was of a coffeepot to see if it was full or not, so more folks agree with that. How about making a cup in bed and then walking towards a fresh cup, it’s as if you had a very specific morning butler. I’m aware this is not a need (and I don’t have or need it), but it’s desirable for sure.

Not necessarily. Sometimes I turn off the adblocker for days and still have the requests when turning it back.

Adguard Home or Pi Hole, in a device that, indeed, can be a Raspberry Pi.

If you want it to block IoT and other device connections, you have to pass all network through it.