Children ingesting magnets is growing problem that can be fatal. For use in a household setting, it is irresponsible to sell smooth, shiny magnets that are of a size that can be swallowed.
What makes you think I'm not buying them to use in the shop or at work? There are many industrial uses for such a basic part.
Yes, it's irresponsible to let them get anywhere near children, this includes in the house where they will get all over. They work great on refrigerators. That is until you overload them with pictures and art at which point they fall off and roll away to stick somewhere at baby level that won't be touched by a broom (ask me how I know).
It's also irresponsible to market them as toys.
They seem approximately as dangerous as deceptively innocent looking razor blades. What we need are magnetic toys which are equally or more fun to build with while being simultaneously less attractive to ingest. Surprised the market hasn't come up with something yet.
If you have children in the house.