I haven't read the book, but I've listened to Jonathan Haidt talk on this subject, and I had the exact same response as you.

For me, I just flat cannot understand this current generation, from safe spaces, to being mentally broken over the smallest things. I've always viewed it as a dishonest way to try and get power over people.

Until Jonathan Haidt. He helped convince me that these young people are legitimately fearful of the world around them.