Wrong.Is that answer short enough for you?
Prescriptive regulations only work in safety on standardized tasks - beyond that has to be assessment and planning. Where the list of factors to be considered are stated, not the solution mandated. This case fell races , conditions and people are all so different that one size does not fit all.
I also showed above, the issue of "windproof vs waterproof" is a fallacy , which will serve to achieve nothing except to stop the very thing you really need which is: The runner assessing and thinking it through for themselves - whilst being made very aware of how very vulnerable they are.
You are radiating "do this and you will be OK"...and false perception of safety is the most dangerous thing there is. It is why inexperienced idiots enter races in the first place.
I know what works in managing hazardous tasks Noel - I have had a bellyfull of it.. And also what does not.