Even taking your skepticism about Chinese investment at face value, having LP involvement is tremendously different from operational involvement or investment committee involvement.

Having been involved in LP reporting at a seed fund, I can say that it happens regularly but infrequently (quarterly, or at most monthly) and at a 30,000 foot level. I've really never seen LPs interact with portfolio companies at a seed stage, beyond chatting at a cocktail party after the annual meeting.

Besides, given the nature of the platform, if they're looking into trends and products, isn't that information publicly available (this is just adding money behind the top syndicate deals on AngelList)?