BTC by its very nature precludes centralization, and thus governments. They can attempt to do whatever they want. BTC will fill the cracks of attempted centralization like water seeking its level.
I am not buying this, can you say the same thing about people who have been buying and selling Bitcoin all their lives using centralized exchange? The foot print is already there and nothing can clean it up, only those who have never passed KYC on any CEX and also stick with Peer to peer trading can escape this.
Bitcoin was created as a decentralized currency but the people gave power back to the authorities by using centralized entities to trade their Bitcoin, the fault is on the investors, they invest in Bitcoin but they failed to use it the right way.
You can only be taxed if you trade your Bitcoin on centralized exchanges, it's why the government want every details available on Binance exchange, to know those people buying big without paying taxes, many new mess will happen in the future, many people wont saw it coming.