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I don't think you need "evidence of freedom restrictions" if if in 7 years he was allegedly (!) seen in person by 3 three people.
I'd rather ask for evidence for lack of restrictions, and so far there haven't been any. I don't think what we did see can be interpreted as anything else than carefully orchestrated evidence that he's still alive.
Once again: there's literally no evidence he wrote even a single word of the public opinions attributed to "Snowden" since 2014.