Do they think that everybody in China cares that their internet is censored or that they're being watched? I'm pretty sure if there was a poll conducted inside China to choose between censored Google vs no-Google almost everybody would choose censored Google.
It's not like a person who's opposing the Chinese government online is going to be using Google without a secure connection anyway. For the rest, you're providing a service that is significantly better than what they're currently being offered.