Bitcoin is fungible like U.S. dollars are, actually even less fungible because of the fact that every transaction is on the blockchain.
Bitshit is less fungible than the usd shitcoin, yes. With usd bill numbers, there exists an information asymmetry preventing any schmuck from checking up the transaction history of any bill's number.
With bitshit, you can fireup any of the blockchain explorers and see the history of the transaction flow, a "risk score", a "privacy score", etc. etc.
Furthermore, with bitshit, you are forced to be on the alert and do your "due diligence": let's say a white supremacist, pedo artist, school shooter, or whatever bullshit questionable dude publishes his bitshit address on his website/twitter/blog/etc. THEN, you have to be on your toes that any bitshit units that you receive isn't 1 hop (or, 2 hops, or 3 hops, or whatever) away from that plagued address.
----
With Monero, all the monetary units are the same, because you cannot ATTRIBUTE ANY USE-HISTORY to them. That's the good thing about ring confidential transactions, and with the FULL CHAIN MEMBERSHIP PROOFS, this NON-ATTRIBUTABILITY quality of Monero coins will reach its ultimate zenith. Any and all coins that anyone spend will have the anonymity pool of all the other coins. Essentially making any and all enotes in-distinguishable from each other.
Now you can receive money from your favorite public shooter and not worry about taint.