Ser, the paper money in your pocket doesn't have a transparent history for everyone to see through a transparent ledger. No one truly knows where each bill went from its "Genesis". In Bitcoin, each Satoshi has its own history, its own "story", everything is known.
That's not even possible in a perfect 1 input - 1 output transaction. You can follow the trail as the coins are moving from address 1 to address 2, but you don't know if it's the same person who moved the BTC from one of their addresses to a different one or if they changed hands. And as o_e_l_e_o mentioned, as soon as there are multiple outputs, blockchain analysis guesses what is change and what is the "real" transaction.
And governments won't even care if your coins are dirty according to their interpretation of taint. As soon as you transfer them to a mixer or partake in coinjoin, they will consider it suspicious activity worth questioning or confiscating.