don't believe the government will have a large amount of BTC, they haven't learned much about crypto and bitcoin, that's the reason they haven't legalized bitcoin until now..
Stop underestimating governments!
I keep hearing this stuff and people think that the government is just some senile senators or some lunatic dictator who has no clue about technology!
Government means also the US Navy, they've developed the TOR protocol.
Government also means the NSA, they've developed sha-2, Bitcoin uses it as a hashing method for tx and blocks.
Governmental agencies have managed to take down dark markets, mixers, find stolen coins, track transactions, and issue laws and regulations, there are plenty of people working for those who have more knowledge about crypto than a lot of users here, so again, don't underestimate them.
Just because they are hostile doesn't mean they don't know how things work.