Not the author, but working through it and having read compiler books in the past... I is very practical vs theoretical, very hands on, and willing to engage with sticky problems rather than glossing over them. The language it implements feels modern (vs the Pascal you do in Let's Write a Compiler.) The writing is fun but not over the top. You hand write the parser instead of using a parser generator.

It’s written by Bob and the others aren’t. That’s a good enough reason for me.