Folks are asking "Why post this here?" I get the question but I think I also get the OP, as a New Yorker who was surprised to see this ad IRL.
Most of our subway ads are for VC-funded Internet darlings (think: mattresses-by-mail, kitschy underwear, online therapy) or for some aspiring blockbuster movie from an Internet giant.
Until I saw this ad, I had never in my life seen a subway ad for a company I actually used, let alone respected.
Seeing this ad in the wild broke my brain. I have advocated for online privacy for over a decade. I have spent so much energy pushing people to use Signal. But I had never before imagined that "online privacy" was a concept that could find an audience in mass marketing.
I don't know if Mullvad will take off. But I know that seeing these ads moved me. I felt like maybe, MAYBE, our movement is breaking through.