My guess is that the level of abuse is much higher by the customers paying via monero, than the ones paying by card. My guess is also that abuse is not entirely without cost for Mullvad.
In other words the cost associated with the extra business that comes via Monero might be higher than the extra money that comes in.
In other words the cost associated with the extra business that comes via Monero might be higher than the extra money that comes in.