I don't think the point of review bombing would be to mess up the actual game... most people don't actually want to see that happen necessarily. Rather the survey would be an easy way for people to make their feelings on the OGL known in a place that we've been told they do indeed read. Obviously there are other ways to do so already... but taking the path of least resistance is a normal human trait and if WotC handed people a simple way of letting people comment to them in freeform blocks of texts... I'm sure some people would probably take it. Whether or not that would ultimately actually accomplish anything would be beside the point.