[mindslight]

Note that a restriction on commercial sales still does not make an item itself "illegal".

I'm not trying to ignore the frustrating activation energy of having to spec/get/install your own showerhead rather than automatically having a default you like. But it's clear that amount of market friction here is much less than say, the overt digital authoritarianism currently going on across the whole phone app/software market. And it's important to keep this perspective, lest memes about "illegal showerheads" morph into groupthink that supports different authoritarian movements.