You say that as though people aren't buying the shit out of them
I agree it's kind of a dumb product, but people buy the shit out of smart speakers. Their market size in 2022 was 10.8 billion USD and rising every year.
I could absolutely see a consumer driven home wall panel selling like crazy - I have a HA driven wall panel at my house and every guest thinks it's the coolest thing and asks where they can get one