I see lack of AO as the culpritExcept they are close enough during regular gameplay:
And that's a very compressed video. With footage streamed directly from the console the fake look of the hard edges is unavoidable without beveling.
When you have such highly detailed cars with very realistic shading on the screen, those low poly simply shaded buildings stand out like a sore thumb. It feels like a mix of two gens: PS4 cars, early PS3 buildings.