If not for AML, KYC and basically the fact you just can't really use cash any more in significant sums for anything we wouldn't have had to bother.
I have 200,000 bitcoin, or maybe I have 0.2, no-one knows other than me. Good.
The same is far from being true via other means such as the legacy banking system or cash. I mean, you can try and send a briefcase full of notes in the post cross-border, it might work, I wouldn't know or care to try.
Obviously the Government can attempt to, or pass laws, to censor anything at any time for any reason. In my country it was illegal for me to visit family for about 6 months this/last year, there's nothing special about Bitcoin, power will attempt to fuck with you simply because they can.