I'm afraid you have missed his tongue in cheek sense of humour.
*edited - which is in fact subtle a poke at facebook culture.
1) We really need that suggested punctuation mark, the "snark," - irony and scarcasm don't always come across in print.
2) He can poke all he wants at HIS Facebook culture, but when he pokes at my active friends, I get my back up. Of course, I have been known to take things too personally. I'm going to be a bad girl and tell a sexist joke at the end of the post, but I know it's my own fault!
3. He's trying to be clever and engaging, and he does write well. But for those outside the circle of "people who share Stu's experience," he's being clever and annoying. The thing is, I'm always reading in news articles about how going on Facebook makes people depressed, or how vapid and vain the posts are. But my newsfeed isn't like that, and the feeds of my active friends aren't like that, so I resent him tarring me with that brush. We are actually managing to connect on FB in a meaningful manner. I do get new baby pictures - I can understand that. I would say I get maybe 10 times the pet photos as I get selfies, and that's just the way I like it. I get a blessedly small number of photos of food. But if one of my friends was at the Eifel tower, I would want to see it! I "inherited" some of my FB friends when my best friend died about this time last year. Two of them haven't changed their profile picture to a selfie in that time. I don't know what these people look like! But we talk about books and movies and our pets and gardens.
4) It's true, if I post a photo of me and my husband, Facebook friends "come out of the woodwork" to "like" it. Mostly my relatives and his relatives who don't share many of our leisure interests but like to see us once in a while. But I don't post on FB to get "likes", I post on FB to connect, so I don't care if the "people pictures" are the most popular.
Ok, the sexist joke. A man is sitting at a dinner table and says to another man sitting on his right, "Women take things too personally." The woman on his left leans over and exclaims, "I do not!"
But as I said, if I knew a new parent starting out, I wouldn't hesitate to recommend it. And I may go back and take a look at those presets! As a new Lightroom user, I'm forbidding myself impulse buys. But after 24 hours, it isn't an impulse buy, is it?