Can't you see this "demo" of "something as impressive as this cross country drive" was not that impressive at all? I'm sure Tesla is able to do a demo like that anytime it wants. There was nothing but freeway driving and he used very vague words to describe what autonomous capabilities were included. There was also no mention of what the on board computer was doing including if an operator could use the computer to control the car in some way including, say, to slow the car down or stop which otherwise we would call disengage.
@MP3Mike mentioned it's weird that he just says he did not touch the steering wheel or pedal. I find it also weird that he says the run could have been done without a driver in the car. You don't need to be physically inside a car to operate the computer. A lot of weasal words indeed. All he needed to say is simply there was no direct or indirect human intervention in the entire trip.
One thing that differetiates the two is Tesla has no need to put up a demo to prove anything, at least not until when full autonomous capacity could be demostrated. People will always look at its cars to judge what EAP or FSD could or could not do. Start ups or new comers have different priorities. They need to use demos to estabilish credibility. That is the most important thing to them. Their survival is depending on whether it could convince investors to put the next round of financing.
There is little, if any "merits" of a demo like that other than its PR value. Any so so basketball player could produce a demo tape showing great or perfect 3 point shooting. That says nothing about if he is better or worse than Steph Curry.