That's the only reason not to go with realtime lighting. Baked lighting is more time consuming. Wow, Dubai looks like the most boring track to ever come to Forza. There's absolutely nothing that excites me about it. Could have driven on Jumeira, next to the tallest buildings in the world, but nope, 4 miles of desert, half a mile of plain tunnel is what we get.
I think the post I replied to was the issue many people have since ever: Forza is just not aiming for an authentic realistic look but favors stylized graphics. And this is not about power but intention.