I would say that they are preventing you from discovering that you can get bitcoin without having to give your documents, with the lightning network
Discussion
If you buy KYC bitcoin on an exchange and then move it into a lightning channel, then that is now a KYC channel. You can do all the transactions you want on that channel, but when you or the other party eventually closes the channel, your balance goes right back to the same KYC address you used to fund the lightning channel.
or a way would be to pass those bitcoins through a mixer like Ashigaru Wallet so that it is no longer known which bitcoins had KYC?
its no longer certainly where those coins ended up
but the record of the purchase still exists.
do you think the government will come for there percentage?
Not true. Opening and closing addresses are not the same.
Example: https://mempool.space/lightning/channel/987720982097362945