heh, Pon Farr first appeared in TOS, right? I've not watched much so will take your word for it.
I find it weird that, if these things were common, starfleet would be so oblivious. I can see on the one hand vulcans being reluctant to discuss them with outsiders. But on the other, hard to see activities of a civillisation of millions staying secret!
Warp drive but no Wikipedia!