They specifically advertise connectivity for a mobile app.

My Oral B toothbrush advertises connectivity for a mobile app. That doesn’t mean they can arbitrarily impose an internet access requirement.

The way things are going though, I wouldn't be surprised if they did.

I mean, as a snarky hyperbole about how ridiculous consumer products have become, sure. In reality, I would be very surprised if Oral B decided I needed Internet access to use my toothbrush.

Worst user experience ever idk why but I miss being able to plug a cable from a printer to a device and then printing

Had the new requires phone app workflow and it was so buggy had to just resort to UPS/Fedex