This has been thoroughly explained in other threads on this forum, including: Mullvad response to donation controversy
Please use the search function instead of along questions that have already been thoroughly answered.
The party he provided 95% of their annual donations for is overtly racist. They have populist socialist and ethno nationalist policies. There was another party in history with very similar views, beliefs, and policies. I don’t really have patience for this type of playing the devil’s advocate. The party he donated to is a fascist, racist party. If you want to believe a party like that stands for “freedom” or “free speech” that’s your (and his) naïve decision to make. He himself says he doesn’t know why he supports the party and that it might be a bad idea. I’m not going to engage with your debate team rhetoric any further.