"b) Pyramids are defined as schemes that dont involve a real product behind it. BTC supporters claim, they have product. Well, I say, its just a camouflage. Kyäni masked scheme with juice drink, Kairosplaner masked scheme with whole user interface. They were still schemes."

I disagree.  I believe there is a real product as I use it to pay for goods and services.  I have one merchant I use in China while I'm in Canada.  I can trasfer this payment with public proof and last time a .03 cent fee.  I would say there is one hell of a product right there.