How do you think any government would come into possession of anything it doesn't even know exists? I did not buy my coins through CEXs, nor did I officially state anywhere that I own cryptocurrencies or any wallet for them.
I read somewhere hopefully I'm not misquoting that a law would be implemented
Where CEX or something can withhold any funds that hasn't been moved in a period of 3-4 years.
Just like the tag for tainted was supposedly created
Coins that haven't moved or doesn't have owners maybe classified as such.
Likely worse case scenario
At some point you'll want to move your coins to an exchange or convert them to fiat. Once you do it, there's no way back - your coins will be linked to you irreversibly. Keeping coins in your cold wallet forever is possible but makes it somewhat useless.
Hence why authority don't like monero
It can help with this
And one don't need to convert to Fiat
Just find someone that needs monero and has what you want
Raw P2P.
But that's harder than it looks on paper.