The secret sauce is skill.
As someone that used to make my living doing travel videography decades ago, this Brandon guy has really honed the judgement it takes to get the shots. There's so much going on out there in the environment and he's able to omit it, control it, and/or shape it into something impressive. It's really quite a thing to do.
He could make any camera in manufactured in the last 15 years look similar to this. In fact, he has.
This guy is a cinematographer that really knows how to chase the light, compose a shot, and also create advantageous serendipity. Which might sound like a paradox, but it really isn't.
But, yes, images like this sell cameras. Okay, buy the camera if you'd like and start the path to making an edit like this. You can't buy his boots-on-the-ground experience though. He's casual about it all during his "how-to" segment, but it really is the biggest factor here.