Isn't it the sign that we are in a giant bubble?
no. it is a clear sign that yet another person was misled by coinmarketcap.com while reading market capitalization values and comparing it with market capitalization of other meaningful things such as currencies and companies.
in reality, these millions and billions are meaningless numbers. it is as if you start printing your own version of US dollar! imagine you buy a printer and print 100,000 dollar bills. print 10,000 of them with your HP printer! that doesn't increase the total "cash" in circulation unless someone starts using your bills. which people never will!