Good products are worth sharing to help shape future products. Grass roots only works if the product is worth using. Vote with your wallet to help shape future products. While the previously poster can be viewed as an “ad”, the post is same as a next door neighbor bringing it up. Mullvad doesn’t do affiliate marketing or pay influencers.
I used to use Mullvad but now I use a different service, but especially like to support open source products.