'Closed tests'... probably people chosen because of 'reasons'. Anything done in secret cannot be trusted in full faith. Options are always good. This way we all win. I thoguht the goal was the more options the better?
Anyone could sign up for the playtesting of acts 2 and 3, so it wasn't secret and I seriously doubt they were targeting a specific demographic like you seem to be implying. It doesn't mean that they'd select everyone, but that doesn't mean they had a hidden agenda either.