If I was more conspiratorial minded I'd say he's a fall guy. Only Made it a few hundred miles away over 4 days, still kept the IDs and gun, and had a handwritten 3-page document explaining why he did it?I wouldn't have recognized that face without that mask. He looks like 3 million other white dudes. Him carrying that gun still and keeping fake IDs on him tell me he planned more violence, but I'm no investigator.
He could have destroyed that stuff, and tossed the gun parts into some dumpster behind a gas station then been on his way.
He could be completely stupid, or he could have figured he'd be caught anyways and wants to be tried.