The talk is about having a client for tiktok but with ability to phone - on your Math lesson. When the phone used to have no tiktok the situation is tolerable even if the phone rings occationally.

Now the tiktok client successfully competes with teacher for kids' attention and some dumbheads are shouting - "Look, the tiktok client still can phone police/firefighters/parents! What else are you going to prohibit, maybe a paper?"