Context is important. In this case, he actually has some pretty defensible reasons for using Facebook this way: active suppression of local independent journalists and low activity by independent Western journalists. My guess is his alternative to Facebook is probably some pro-Assad propaganda rag. As bad as Facebook is, that's worse.
Your reaction would be more appropriate for someone chose to rely on FB for news about the US or Western Europe.
As just one measure, FB themselves deleted over 3 Billion fake accounts between april and sept last year. These are accounts that provided a phone number for verification. The disinformation operations on that site are like nothing anyone has ever seen.
They're also responsible for things like extremely biased reporting against Myanmar (no reporting about Ang sang su kyis speech at the genocide tribunal except "she didn't say the word rohinga!"). It's no surprise that there's also a strong campaign by the OIC to slander Myanmar which is running concurrently