It’s not the speed that did it. The idiots did not realize that, because of the upper rock, the incline was much steeper than it looked. It was simply a combination of a very steep incline and a high center of gravity.
Rock Crawlers have high centers of gravity but could surmount this due to low speed and throttle control. This driver probably could have stopped the flip by braking before the critical balance point just like on a motorcycle doing wheelie.
I totally disagree with you. He could have climbed it easily, but he lost control by over-revving.