Ah yes, the classic "Facebook already knows everything about you so why not just use them for every facet of your life to prevent other companies from doing what Facebook does with your data" defense.
1- It's an opinion piece. Opinion pieces are never expected to uphold the same levels of journalistic standard as reporting. It's understood to literally just be, one guys opinion. Some are good. Some are bad. Take with a grain of salt, call me in the morning.
2- Explain to me why Facebook deserves to be trusted and this guy is making mountains out of molehills? Do you genuinely believe FB is a misunderstood good actor here, or are you just annoyed about something else? (the NYT, "anti-tech" journalism in general, the rise of anti-corporation sentiments over the last 10 years?)