1. If you will like to fight about the chilazon I am open for debate, but to argue about who does wear and who does not wear is really a waste of time. Go do some investigating yourself. I know someone who went around to many rabbanim and asked them why they do not wear. He may have gotten the gabboim angry, but he managed to put together a list of many of them who wear btzineh.
So let us try Rabbi Belsky. You claim he does not. I claim he does. So pick up the phone and call his son to find out. It is not very hard to do. But to decide everyone does not based on no information will make you what people call a proven shakran.
2. Why would someone wear btzineh? very poshut. Look in Tshuvos Vehanhagos of Reb Moshe Shternboch who says there may be a problem Lo sisgodido. I don’t know why they wear btzineh, but you can go ask them. Do some research yourself. Did you look into every gadol you wrote does not wear?
3. I am not trying to prove to the world that you must wear this on your tzitzis. I AM trying to prove that this is the chilazon. So if you have any taanos on whether this is the chilazon then I am open for argument.