Can somebody explain to me the reason the topology in these development pictures of gta v make no sense?

I am quite new to blender, and currently learning how to create good topology. always been taught not to mix tris and quads, and to use as few vertices as possible, especially when making things like video game assets. It seems like they follow this rule for the most part, but I see a lot of random polygons in weird areas, or completely unnecessary edge loops, just like in the driveways of the first picture. Also, obviously a lot of mixing of tris and quads. Why is this? Is the topology method just above my head? It seems to break every rule I’ve learned, and seems like a nightmare to texture. Thanks for answering!

u/settingdesign3D — 2 months ago