Nowadays we do not use paper money anymore. We do all our shopping online. We do not need paper money for clothes, food, etc.
Payment systems are constantly changing. Bitcoin is the result of this change.
So Bitcoin is a real payment system. Yes bitcoin is a money.
I do not know where did you get this information but this is not entirely true. I cannot even give a single country that do not use fiat anymore.
Fiat money is still the mostly used type of money across the globe. It is being used every minute for payment. You claim that digital money is the only money being used and you even neglect the fact that digital money, at any point, did not surpass fiat at all.