Is Phi Kappa Phi Honor Society legit or worth it?

My son just got an invite for it and I'm interested in knowing anyone's thoughts or experiences with it. He's technically a junior, though he's really only in his second full semester in college thanks to all the DA and AP classes he took in high school. BTW, he's at ULL.

He's gotten a bunch of others that all seemed to be either scams or nothing worth joining but this looks a little different, and since I have no personal experience with it I figured I'd ask.