I scroll past the sponsored Google result links to get to the non-sponsored one that was “identical”. I haven’t intentionally clicked an ad in a while. Generally if I want to click an ad I just Google what I need to not need to. I use a pi-hole so generally I don’t see them.

I mean two little hunks of plastic are most definitely cheaper than something big and sturdy in the middle as it needs to be over engineered to make up for the lack of physics being on its side. You can buy an aftermarket TV stand or wall mount it.

If it closed slowly enough you could just measure resistance or voltage of the motor to determine if it’s not moving. The problem is all the other things that you need to do before you can even close a door like shutting a fruit drawer.

It’s a lot cheaper to install one sensor per door than it is to install a motor for every moving compartment and a sensor to see if it needs to be closed and that’s just to make sure every door can be closed. A lot of extra circuitry for something they can just do on the cheap.