I think this is a case of a soldier being programmed. Good thing he died or there would be a rush to execute like they did Tim McVie. We shall never know the truth. I doubt even the incoming admin will tell us all the truth.
Las Vegas cops aren't known for being forthcoming. The truth about the sniper in the hotel there years ago still hasn't come out. I think Mr. Patel with be more forthcoming should he be confirmed as FBI Director, but there might be scary things in the background that "they" believe would cause panic if known.
He apparently had a brain injury a couple of years ago, when he was stationed in Afghanistan, so something that happened with the treatment for that might have caused him to target the Trump Hotel. However, I am still not convinced that he intended to do that, or that he was alive when the CyberTruck reached the hotel, and possibly, it was not even him, since they were unable to identify the body and the DNA was not a match with his child, which it should have been. The truck rental was a private rental, through a company called Turu, which facilitates person-to-person vehicle rentals, and the man he rented it from said he didn’t have any kind of bad vibes from Matt when he rented the truck, and that they were in contact up until shortly before the bombing.
I think there is a lot going on here that we will never know. The "driver" may have been killed, loaded in the truck, and remotely detonated...or he could have just been a tourist with a bunch or fireworks and gas cans in his car looking for someplace to stay the night