Nanny mercantilism
The Royal Navy didn't trust their sailors with pointed knives (an essential tool for every seaman) either, and the petty officers would routinely snap off the points of the ratings' blades to discourage brawling and mutiny.
A point isn't very important for a kitchen knife, it's better off without one. I wouldn't worry about the civil liberties aspect of this until rounded blades became mandatory on bayonets.