Sorry, I meant that they are installed in nearly all newly built houses, at least in my country. I don't imagine you'd find many in older kitchens.Sorry, I meant that they are installed in nearly all newly built houses, at least in my country. I don't imagine you'd find many in older kitchens.
I have never seen that anywhere at houses I visited in France, Germany, Italy, Poland, a few US.
I am not saying that this is not a thing, it is just that "so many" depends on the demographics.