You don't reach everybody. I also got the original Wolfenstein back in the days, long before Internet.
However the reason for the regulation is relevant: This Nazi stuff shouldn't be fun or anything. Playing with it makes it simple to forget that those symbols represent evil mass murder. Also going back to the times where the initial versions of those laws were made: Back then Nazi symbolism was everywhere in the county and the Allies didn't want to allow any Nazi-heroism. Balancing this against "legit" use is tough, especially in context of historic games.
The self-censorship mentioned in the article above is the result of a publisher trying to avoid hitting a law but still selling as much as they can, without really thinking about what they were doing.