I can't verify the thing about 7% CPU consumption for pathfinding per player as I'm not an avid user of TFS, but I was thinking about this just today, was considering asking the community which TFS version they think is best.
It seems obvious that a later version is going to be better, but that isn't always the case, both inside and outside of software development.
And seeing how inefficient TFS can be, and how newer versions are in some ways worse than older ones, for example slow and laggy movement even on localhost (not only shouldn't ping matter on localhost, my ping isn't so bad that I should be walking at incredibly slow speeds, I don't have the same issue with my own engine from scratch even when connecting to a VPS), I wouldn't be surprised if older versions were better in many ways.
On the other hand there are some nice features that newer TFS versions have, like their whole event system.
Anyway, agreed with your post, no point complaining about free stuff, at the same time he could just release it without asking, so I can understand people that go "no xD" in some sort of way.
@Competitibia
Couple of questions for you. Is it any better than OTHire? What is it based on? I doubt I'm going to use it, but someone might.