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".
In reality, crypto's true purpose is a moving target, so it can never be criticized because that's not what crypto is really about.
Bitcoin is a tool. Like hammer or a shotgun. You can use it whatever way you want. There is no centrally defined "purpose".
Any infrastructure has a purpose. It’s fair to ask why Bitcoin exists and whose project it is.