The context I found the usage in (which hopefully should suffice here):
この人ってやっぱり本当に危ない系な人?
自分を世界そのものだとか言って……それってアニメの影響か? 涼宮なんとかがどうだとか言う……。
I'm not entirely sure what どう is doing in this structure. Reading a similarly answered question didn't clarify it for me unfortunately. Should it just be treated as a set expression like in the previous question, and if so, what does it mean here? Or am I just misunderstanding どう in this usage (which I think of as meaning "what" or "how")?