Besides, as famous as Kirk was, he still was no Founding Father of the Federation. I don't think people in-universe worship Kirk or hold him up on as high a pedestal as do many people in the real world.
I like to think that as well. Though, admittedly, Kirk did play a key role in saving the Earth from destruction by an unstoppable alien probe twice
in the span of a dozen years or so, which does seem to be the sort of thing that would get someone a pretty sizeable mention in the history books.