Although Bitcoin is a decentralized technology, it is not immune to the reach of governments. Assets need authorization to be traded and due to this situation, regulations will emerge in several countries.
Questionable assets needs government to intervene I guess, that's why bitcoin needs approval from the government, the problem with that the essence of decentralization has been stake, good thing is the actual system can go further without any changes, we do need to exchange our crypto to fiat so that's where the government will be concerned and will place every rules that will give them authority to question each profits or actual money that their people are gaining upon using this chain.
yes it is. Aside from that ir cannot be also used locally when there is no proper approval to it, and the worst case is that you will be considered as illegal, aside also from the risks and for being decentralized. personally i don't really think that it needs approval since it is decentralized, from that point further reasons will only be owed by the government i guess.