I'm not sure who this is for - if someone is moving to a trike because they have balance issues, they're not gonna be riding it on single track.
I guess it's just an alternative to a regular eMTB, just a different off-road toy. Nothing wrong with that. :) in a way it reminds me of the ski sled thing you sit on like a bike.
I figure it's for people with balance/mobility issues who want to do a little bit of off road or who maybe just have shitty roads where they live?
I gotta say, on some of my roads you wouldn't want to ride anything less than a MTB or gravel bike, road bikes would not reliably make it and you'd end up eating shit sooner or later if you tried to go fast.