Okay, now imagine your fee for a Mullvad subscription being funneled into a neo-Nazi movement. Not something out of history books; people actively, currently working to oppress, expatriate, and in the final measure kill people that don't look or think like themselves.
And you'll be complicit because you weighed your "security" over what your VPN company stands for and supports.
They showed you who they are, believe them the first time. Don't subsidize white supremacists.