While I don't usually poke children when they are having a tantrum, I have to ask you what the f--k you are doing asking for feedback and advice and then getting bent out of shape when someone gives you some you don't like. Considering that you don't even know what a split grip is (and the guy you have doing your "spining" is using a ball bearing apparatus and an instruction sheet), I suspect that you may want to be a little more open to input from experienced people.
As for your points: All pros don't do it. While I don't have stats or a lot of information on this, considering the limited value the clubfitters I speak with put into spining (and I speak with a lot of them), I suspect the amount of spining going on for the pros is limited. And even more to the point, you are not a pro, so even if the pros do spine their clubs, that has little to nothing to do with you. The pros will benefit from a whole lot of things that you won't.
Finally, considering your response, you can expect that I will not be providing you with any feedback, input, or direction on your future questions/threads. By the sounds of things, that won't trouble you at all.
P.S. Pixie dust: Still $500 regardless whether you apply it to your clubs or take it rectally.