And I’m talking about a bath mat/rug. As clearly shown in the picture. I’m not a 100%, but I don’t think they use the kind of glued on whole floor carpet anywhere outside the US because it’s just crazy. Carpet elsewhere is just normal carpets/rugs, like sane people use.

Yes? And how prominently do bathroom floors feature in the media you consume? It’s not like this is some outlandish concept lmao

You’ve never heard of bathmats? They’re fairly common worldwide.

I mean, you can definitely make recorders with multiple chambers. Check out native American flutes - lots of which are essentially recorders. Just search for double flute or drone flute on YouTube.