I actually prefer "minting" as it is a more accurate name for the activity. Usually governments mint coins. No one mines a coin whole from the ground. The quotes show they know it is an odd usage. I mine cryptocurrency. I "mint" new-type coins.
Using scare quotes to mean that nobody else says something strikes me as odd, but you're probably correct.
Usually governments mint coins, but no government (or centralized entity) currently operates a legitimate network that matches up with the same properties as bitcoin.
I might have used an asterisk, maybe? :)