They're very cool in theory. My impression from the EngineeringExplained guy's experience isn't great. And Lucid does something similar to Tesla where too much (IMO) is controlled through the touchscreen.

A significant fraction of his issues were both him and his wife using their phones as key’s. He obviously it should still work, but it’s something of an edge case.

What about sales, though?

They outsold the model S last year which was their primary competition.

They successfully launched their second model, the gravity, which would have competed with the X but will now likely just outright replace it.

Their mass produced $50k SUV is expected to launch this year.