Agree, which is why this is mildly infuriating and not worse. Of course there were about 10 minutes of unskippable ads on their media screens before take-off which was a pleasure to be subjected to. That should get everyone free WiFi without needing an additional ad…

I do it once a day, which is what my dentist recommends. Usually at night so you don’t go to sleep with stuff in your teeth. Being gentle should prevent it from hurting.