Yep, 100%. People used to say the atmosphere at Withdean was crap purely because there was no roof. Now it's because of a design flaw in the Amex. Absolute nonsense, it's down purely to the demographics of the area, and the people that attend the Amex these days.
Apparently safe standing would...
Very true. Look at some of the dreadful grounds around Europe that have amazing atmospheres, often without even a roof. The Amex has a crap atmosphere because of the people that go there. No other reason.