I think it solves a different issues. This is aiming to solve a depth issue (e.g. a deeper coat rack would make a door hit it, as shown in the video) while a mu

I think it solves a different issues. This is aiming to solve a depth issue (e.g. a deeper coat rack would make a door hit it, as shown in the video) while a multi layer hanger seems to be more a "I don't have enough space for all the hangers" (but importantly, you have space for at least one!)