Traceability is non-fungibility and it's dangerous.

See why.

What would happen if a terrorist organization sent you money, or if the laundered money found its way into your wallet by mistake or with intent to harm you?

Most blockchain like #Bitcoin do not have the ability to reject a receipt of money and if they know an address of your wallet from some transaction you made previously you are in danger.

You would be investigated by the government, of course as long as it was a blockchain with traceability.

Traceable money is not fungible.