Earlier quoted context omitted.
Having taught hundreds of people how to use True crypt over the years, I would certainly say that it was hardly easy for the average person to use.
It was, however, easy enough to use for anybody capable of administering their own Windows PC, a situation which most of us on this site have been in at some point in our lives.
The problem really came in Africa and the Middle East were overall IT literacy is low. People could often use a computer but were not familiar enough with it/scared to break something that they were afraid to really problem solve - esp human rights defenders in their late 40/50s in these places.
So for example, if taught A then B = C, TC was fine. The problem often came when A then B = Z, then TC became a problem. It's UI/UX and use of language (why call something "Mount"? Just use the word "Decrypt" for gods sake! - yes its not perfectly accurate but its easier for people to understand.) was pretty intimidating for many of the people who's lives really depend on it.