There's not "click". I mean yes, there's treble in the attack because so much of Bonham's sound came from the room mics, but it's happening at like 4-6k, whereas I think of clicky bass drums as happening substantially higher than that. Between 7k and 11k, for example.
In the seventies, when drummers took their front heads off and stuffed their drums with the bedroll, they got a more midrange punch sound rather than a sharp click. That really wasn't prevalent until the mid 80's, and even then it was more mid-centric than it is now. Only recently have we started going for the wet plastic sound (which in the interest of full disclosure, I am a big fan of).