AF, I'm willing to accept the explanation that good knowledge of cold fuel behavior is either not well or widely understood.
I think we always learn in aviation, for example take ditching an airliner. We've recently been reminded (again) that it can be done successfully. But how to do it? Probably only a fairly small number of aviators understood it very well prior to the Hudson River accident, while many aviators didn't think it was possible. So that knowledge existed, but wasn't widely known.
I think it may be similar regarding cold fuel behavior.