I mean come on this is some low poly rocks with low resolution to the point that its even blurry and that's hard to do in a stylized mesh. Look at the ground and the tree trunk.
Like come on. We know texture data is like 70-80% of game data. A stylized/cartoon game makes things so easier to load data because there are no texture complexity.
I hazard to guess that these rocks are not even 1,000 triangles. Now compare them to what people expect next gen...
That doesn't mean Rift Apart isn't a great looking game. It is. The baked static GI, art style and particles are great.
But its made up of low poly environment and simple texture complexity. This makes it easy to push data because you don't have to push 4k-8k textures that a photorealistic game is aiming for.
We all know if we saw a game with those kind textures on rocks, we would make alot of noise about it and this is worse, a stylized rock which hides low resolution texture.