the concept of a good or bad coin is a societal, so Monero is just a 'bad' coin, even if it is private, or no?
It's not a social issue; it's a technical one.
If I receive cash from a drug trafficker and give that money to my cousin, my cousin won’t know it came from a drug trafficker because it’s cash.
If I receive money from a drug trafficker in Bitcoin and those addresses are flagged by OFAC, and I give that Bitcoin to my cousin, my cousin will know that Bitcoin is flagged, and my cousin’s Bitcoins will end up being flagged.
With Monero, it’s the same as with cash—it can’t be flagged.
If I receive cash from a drug trafficker and give that money to my cousin, my cousin won’t know it came from a drug trafficker because it’s cash.
If I receive money from a drug trafficker in Bitcoin and those addresses are flagged by OFAC, and I give that Bitcoin to my cousin, my cousin will know that Bitcoin is flagged, and my cousin’s Bitcoins will end up being flagged.
With Monero, it’s the same as with cash—it can’t be flagged.
1