None of this is true. It really feels like there are a couple people who were, like, alive in the 1990s trying to explain to people that cryptography was not in fact illegal or even regulated in the USA during the heyday of Ace of Base, and then a lot of younger people trying to axiomatically derive an alternate history where nobody could encrypt anything. You could just download PGP and run it, and if you go look at back issues of Wired, you'll see that lots of people were begging Americans to do just that.