Yes? The garage door opener has limit switches and PIR sensors attached to it to handle the safety stuff, the remote is simply a switch..

I'm pretty sure that's how most remote controlled garage doors get closed.

Maybe some people in individual houses watch and wait for their door to be fully closed before driving away, but that doesn't seem to be the norm for collective housing (I've certainly never cared myself) or even for most individual garages around here.

MyQ lets you close them blindly. In fact, it has a built in timer that will blindly close it for you, after 30 minutes, or whatever you choose.

They have pressure sensor strips along the bottom to detect impact that's not the ground, to make this reasonable.

It's not some new idea, it's the current state of all of these remote doors.