[fear-anger-hate]

They use monero because what they are doing (copyright infringement) will get you in to big trouble anywhere in the western world. Without cryptocurrencies much of the modern large scale archival efforts wouldn't be possible, or at the very least would significantly increase risks for the people participating in it. For me this alone is a good enough reason to admit that there are valid reasons for existence of privacy coins.

The harm they may cause in the short term via tax avoidance or being used to buy drugs is minimal, but the possibility that because of them archivists are able to fund servers for data that future historians wouldn't have otherwise been able to get their hands on? Priceless.