It's the government trying to enforce their opinion of who should own those Bitcoins, thereby taking power away from the owner that the network has decided on, which would be "whoever has the cryptographic keys".
9/10ths of law is property ownership. I find hilarious that anyone would want less of this concept, not more. My interpretation is that crypto enthusiasts want the "trust of the crowds" not a centralized government. Which doesn't mean the trust system becomes contracted per se, but rather under a different set of rules (i.e. purely direct democracy vs centralized republic).