I have a hunch it has to do with the cost

It’s a keyboard that allows you type violently by punching it. AI algorithms are used to converts punches into meaningful keypresses.

In this case it looks like “extreme” really just means 10 keyless which is a neat fad right now where people are liking the “minimalistic” keyboards which are nice if space is a concern but really every manufacturer is jumping on it because it translates to making less keyboard overall and charging more for it.