Why do what you can already accomplish on your iPhone or iPad, when you can have yet another device that in this case is stuck in one location on the wall in your house? I am sure that they’re likely looking at a home hub style device, but sticking it to a wall just makes it inconvenient to use.
I would think a better solution for a smart home hub, would be to put the brains of a hub into every HomePod mini or max, and/or AppleTV, since these devices normally just sit in one spot plugged in all the time. Then just have the Home app drive all functions from your iPhone, iPad or MacBook.
I used to have a high-end whole home stereo system with keypads in rooms to run the speakers as desired per room. It was a great idea at the time, because you only needed one system that could drive music into 5 different rooms. But as soon as the iPhone took off and AirPort Expresses were launched, the idea of having to go to the keypad every time to make adjustments, was a huge bother and reminded me of the tv’s I used to have before the days of tv remotes.
I ended up pulling all the keypads for the system and using a series of AirPort Express‘s to stream music and movie soundtracks into the various rooms. I still use one AirPort Express that is connected to a HomePod and control both through the Home app.