Well its the same in Germany: You can buy Blades hear whit One Hand Opening Mechanism, or longer than 12 cm (metric) , or even sharp Swords whitouth any issues, and you can also have them at home, but you are not allowed to "Carry" them like an normal Pocket Knive, they have to go in an closed container when you want to transport them in Puplic..
But you can buy lots of stuff hear..
They did now Forbidden 2 Side Edged Daggers, and Automatic Knives, they are not even allowed anymore to own..
I would had more likly an Law where you can make a short Knive Course whit an Exam to get an Knive Lizense: whe have this system at Boy , and Girl scouts: an Knive Training is needed, and if its got passed, they are allowed to carry an Knive on official Scouts Events..
For us an Knive is just an Tool, and part of the Scouts Identity ..
I for myself have now this Multitool whit the Blade and the Scizzors again as an Pocketknive, and when i go to events where Knives are forbidden, i just remove the Blade
Zombie Knives are something, that nobody need, they are often cheaply made, look cool, but in an actuall Zombie Apocalypse you are much better suited whit an Plier Based Multitool and maybe an Forest Tool like an Machetty ..