Having read it a few times since I think it falls into the same group of books as Mythical Man Month, Peopleware, and the Pragmatic Programmer where the earlier in your career you read it, the more you'll get from it.
Reading these books after 20 years of programming I found that I really struggled to find anything useful to take away from them.
It's not that these books are bad, or out of date. It's more that they exposed some new ideas at the time that, to the books credit, have been picked up and made mainstream or basic/required knowledge for the working programmer