You have to fundamentally understand how UTXOs work.

Think of a UTXO as a bill denominations.

1 5 10 20 50 100s

So when you spend a higher denominated bill for a lower denomination of payment you are essentially " owed" back change

When you send a UTXO to the tx0 you are sending a predetermined amount of sats.

.5

.01

.001

So think of those as dollar bills you put them in a pile and mix it around and then grab a bill out you dont know whos bill you got but you can be sure the link between the prior utxo set and the one you have now is broken.

As others have stated prior if youve bought KYC then the government will forever know you have X amount of #bitcoin forever so technically they could hold you responsible for said amount.

Using whirlpool will break the link but doesnt kill the KYC