For me, it boils down to a couple of things:
1. It’s really a nice tree that has a lot of effort put into its development. If I’d put that much effort into a tree, I’d want the tree to be unambiguously the central focus of the composition. I would argue the narrow base of the rock that is the source of the precariousness, threatening to yield to gravity and send the tree tumbling into the abyss, is the primary focal point. It’s human nature to stare at the source of impending doom.
2. The level of precariousness is perhaps a bit much, straining my suspension of disbelief. I would expect a tree in such an exposed location like that in nature to have met its end already or to at least have considerably more battle scars from lightning strikes and wind.
But, it’s not my tree, so if it floats the boat for its owner, that’s what matters, unless the goal is to win a prize in a show (and I really have no idea what the experts who judge shows would say about it, as I have little interest in such things).