Nah I don't think it makes sense to say there's "no reason to get TN". At the <$400 price range 1080p, if you care a lot about crispness of motion, no ghosting, etc, you will want to go TN. Or if you need 240 Hz. No you won't get the most accurate colours, but you won't get ghosting at all.
Already with this new monitor with its 4 ms response time, I can see ghosting even just moving the mouse around. I tried enabling the "overdrive" setting and that helps a bit, but you can't turn it up too high or it will add artifacts.
It has a strobe mode blur reduction in 120 Hz but then you lose adaptive sync. I will give that a try with different vsync settings to check it out though. It definitely looked sharper in the blurbusters test (not very bright though)
No monitor is perfect, it's all about getting the right one for you. And within your budget of course
