Several of the criticisms the book lists are still true today. File locking is unreliable, deletions are weird, security is either garbage (in that you set it up in a way where there's very little security) or trash (in that you have to set up Kerberos infrastructure to make it work, and no one wants to have to do that).

Perhaps I was a bit hyperbolic about it sucking more nowadays. At least you can use TCP with it and not UDP, and you can configure it so you can actually interrupt file operations when the server unexpectedly goes away and doesn't come back, instead of having to reboot your machine to clear things out. But most of what the book says is still the NFS status quo today, 30 years later.