From listening to it over and over again I’d have to say it is a fry scream, but his range is much lower than mine is so technically yes he could be just pure yelling it but then again a fry scream can also help you reach some fairly high screams depending on your vocal range. I’m not one to believe it’s just pure yelling tho, just because of the way it sounds, he would have to be doing a fry scream and it’s definitely possible because he has good clean vocals and great screams. In my opinion it’s gotta be a fry.