None of that makes "remove the fats and replace them with sugar" in the post upthread accurate.
You are making an argument that people do so, do you have any evidence for this ?
There is a negligible difference in glycemic index / glycemic load between the variations of M.F. milk products. Some analysis has skim milk as having a lower GI.
Unflavoured Milk is not relevant to the GI conversation.
Ok, there's no different.
Beyond that, Minor differents in glycemic load are irrelevant if you're consuming milk with a meal, like the kids in school are doing.