They will only start acting once they find out that some people from the government other than them has started using crypto. They just don’t want to be one upped and any concern they will raise are just futile excuses.
And they can even lie and say negative things to crypto only for the public to not suspect them. Well, they are wrong with that but that action alone can make them untrustworthy already.
Also, if they want to hide their shady deeds, then they better use a more private crypto like Monero, Zcash, and Dashcoin because BTC is still transparent and someone who use it can still possibly be traced by viewing their transactions in the Blockchain. If ever they found other crypto users that are also from the government, I don't think they will react negatively because that was their bro's and sis. They will even became friends and will talk about their future plans with it.