The people running and working at GM have no “taste” or appreciation for quality. They are unable to see or care how bad their products are, or how much better the competition is, and they also market exclusively to customers with the same issue. If they could see the huge flaws in their products and understand why SAAB would build their own, they could make their own vehicles decent in the first place.
Driving a modern GM vehicle and being aware of these things is infuriating. They are really quite awful- aesthetically, sonically, performance wise, etc.