I am not a doge supporter but I think Dogecoin isn't a cryptocurrency that practices a pyramid scheme.  There is no company that requires anyone with a fixed entry to enter the market.  People are not required to recruit anyone and get a reward.  Dogecoin is in an open market so anyone who is buying or selling dogecoin isn't forced to or doesn't have a compulsory amount required to enter the market.  If you tag Dogecoin as pyramiding because of the notion of " buying low and waiting for someone to buy at a higher price "then everything in the market is a pyramiding scheme.