People accidentally hurt themselves with kitchen knives every day. They are also very often used for violent crimes.

Clearly we need to regulate the kitchen knife industry more. There should be a central authority that sells authorized kitchen knives with at max 6cm length and all other knives should only be available to certified chefs.

Once we have outlawed the longer knives and strong restrictions on ordinary kitchen tools become normal we should just outlaw knives altogether. You can still hurt yourself with a short knife. Only chefs should ever be allowed to own such a dangerous tool. Just buy or order readily prepared food. Why would you do this weird nerd thing called cooking anyway? Just choose from the official list of allowed foods.

The idea that we have to prevent people from being in control of their own computers — that's what a smartphone is — is deeply dystopian and authoritarian.