> argued that parents are doing a real disservice to their kids by overprotecting (coddling) them, rather than giving them more freedom and allowing them to make mistakes and learn.

Correct.

> This year, he’s back with a new book, The Anxious Generation, arguing the exact opposite

Incorrect, and proof the author hasn't read both books or is so against Haidt that this is what his cognitive bias has led him to.

> social media and smartphones have made kids under-protected, rewiring brains and increasing teenage depression rates.

Correct.

> Haidt tries to address this obvious contradiction in his book with the standard cop-out of the purveyor of every modern moral panic: “This time it’s different!” He provides little evidence to support that.

Going to need a source with context for this.