Another reason is that the Tor network has been overloaded since it's inception. If Mullvad can take off the load slightly for the uh... less necessary users (a

Another reason is that the Tor network has been overloaded since it's inception. If Mullvad can take off the load slightly for the uh... less necessary users (aka those who used Tor Browser for anti-fingerprinting uses rather than the type of protection offered by its onion routing), then that would be a win in the books of the Tor Project.