I spent two years in Hong Kong and from everything I saw and heard, free speech is more than real only "in the context of China". It was something I noticed early and often...even compared to Canada (my home country). In particular, respect was two-ways...protesters weren't hellbent on wanton destruction and the police wasn't violent at all.
I'd walk by some Chinese government building every day. The security was tight. Once or twice a month there'd be decent sized protests...The police was there in large numbers, but I never saw a single incident of violence or force. People were allowed to express themselves without any fear.
There's also the fact that China and the US just had an "informal" summit and are having further high-level talks in July.
Also, among the few post-evacuation details he listed, why did he conspicuously mention that he left his girlfriend in Honolulu? Because obviously, such a person would be first in line for questioning about Mr. Snowden's whereabouts. If he didn't break up on bad terms with her, then there's no point in drawing attention to her. But a non-existent girlfriend would be a good wild-goose-chase to set his chasers onto.