Snowden hasn't said much of anything about the subject as of this writing. However, Trump doesn't exactly have a stellar record on internet privacy so far. He has proposed reauthorizing the Patriot Act and the previous, less restrained NSA mass surveillance that took place while the Act was in force. He tends to "err on the side of security" over privacy, even if he's not especially fond of it. As such, Snowden probably won't have many kind things to say. He's in favor of more privacy wherever possible, and that could easily put him at greater odds with the US government than he is now.