I think that's because people don't cook as much as they used to. And when they do it's rarely proper cooking and more assembly of prepared stuff, often just reheating.

In France too, most kitchen are optimized for looks with an island and fully opened to the living room. If you use noisy equipment, it makes both places uncomfortable. But I think that's the point, it doesn't happen that often.

There are not a whole lot of people who actually cook anymore and those who do deal with the annoyance or have their house choice influenced by that requirement.

I think complex home cooking is a vestige of the time when there were middle class housewives with a lot of time to actually do that. Nowadays with both parents working, cooking has been relegated to an activity that has to be fast, easy and efficient; which is why those multifunction cooking appliances are so popular. You never get something great out of it but it works decently enough to have the person responsible take care of some other errands simultaneously.