Er, Jack, Jim types many a long post, often a good number of them every day. I suspect that the deficiencies you describe may be far less significant were he to have the time to do some careful editing every time. He's hardly going to be publishing stuff without having done that himself. He makes his points clearly enough for me (a relatively careful self-editor) and, on the whole, it's probably good manners to overlook the perceived deficiencies here. And diplomacy is not, as you know, my middle name.