Don't mix Bitcoin with crypto aka shitcoins.
This is why Bitcoin is better than banking system, it's faster and transparent, there's no hide or secret fee if you want to send a coins. Government will not want to accept Bitcoin as a currency because people might tend to choose Bitcoin over their fiat and banks, if not many people use fiat and banks, the government will not make a lot money and many banks will collapse.
Unfortunately, Bitcoin is not anymore faster than fiat wire transfers, because on-chain transactions take more than 10 minutes, even with expensive mining fees while transfers through Paypal or Instant SEPA take only few seconds with no fees. So only LN(that is to say off-chain) transactions can compete with the speed of bank transfers now.
But on a traditional bank international bank transfer, Bitcoin is way faster having only 10 minutes at least waiting time, while banks international transfers[1] needs 1 to 5 working days. Even PayPal to bank account takes 3 to 5 days[2] although paypal to paypal takes seconds. It is still faster with Bitcoin if we compute the time Bitcoin to bank and PayPal to bank time of arrival of the fund. On top of that faster transaction, we all know Bitcoin does not need any intermediaries and has cheaper transaction fees.
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