Pick your battles and all that.
The only realistic alternative is Tesla leaving Sweden. Prospective owners would have to import their cars from other countries. It's not hard to imagine that situation.
This is specifically the case with the Sweden Democrats. A big motivator for them is a) bashing greens, and b) being a better alternative for the working class than the Social Democrats. Siding with a foreign billionaire over "salt-of-the-earth" workers is not a winning move.
Vocal or not, no one will not be able to affect this semi-voluntary system unless they control bascially the entire economy. This is unlikely to ever be the case, until maybe some supranational EU agreement changes the rules entirely.
This is a huge deal in whole of Scandinavia. Today Finland unions joined in. The other day both Norway and Danish unions joined in. Before that, many other Swedish unions joined in.
This is Tesla versus the Scandinavian model rather.