Like anything else, Bitcoin can also become an idol, but I don't think preferring and promoting Bitcoin over fiat currency is necessarily an expression of the "love of money."

To keep it from becoming an idol, one must always remember that it is a gift from God, and that even if it does make our lives better this side of the resurrection, it is ultimately only Christ we need if we have an eternal time-preference. There's no amount of Bitcoin that will buy you the words "Well done, my good and faithful servant."