Actually there are no evidence about this yet . Some government banned BTC but also some support it
I'm not sure if there are some government that really support bitcoin. I think they just let bitcoin grow as long as it won't disturb the economy system of the country.
Yes, there are some government that support bitcoin, they even build some ATM for them too in case they are need to get their money from their wallet. But it will be a problem if bitcoin grow as long as people want and it will disturb the economy system because more people will move to bitcoin rather than fiat