There was a discussion the other day on how this was possible, where a hash would be created and that would allow for both encryption and deduplication. Let me see if I can find it.
Mega might be doing the same thing: saying one thing to attract early adopters, and changing the marketing language once it gets broader adoption by people who don't care about that attribute. It's dishonest, but it would hardly be shocking to learn that a multiple felon was being dishonest.