That’s super impressive. I guess that would work for a notification speaker. But for full sound I have doubts about the low frequencies. I would assume you would need a woofer anyway in a home setting.
You could always have a separate speaker for low frequencies. Low frequency sound tends to be perceived with less of a directional component, so if you have nice directionality of the highs and a single source for the lows, that's pretty acceptable. Removing the need to handle highs might make it easier to put together a speaker for the lows in the confines of a modern flat screen.