Not quite sure how its petty mate. I mean, 'lol nature goddess' isn't exactly spewing originality in of itself. Hell, even in Varieties of Faith itself, Kynareth is still heavily associated with the sky.
It's petty because their gods (at this point) merely take on a bunch of combative qualities. Nothing wrong with combat in itself, but it appears that it's mostly what they care about. They've reduced themselves to just a warrior like, honor based culture. When there are more strains in their history that point to more than that. Their lack of Jhunal is another sign. They've lost a connection to logic. The way they champion Ysgramor is another sign - he's just a guy who came in the Return and killed a bunch of Elves. But the actual Ysgramor sounds more complex - he was scholarly and cultured enough to develop a writing language for his people. Nords themselves don't talk about that. And the same kind of oversimplification has happened to Kyne, I think.
edit: It's a bit like the Klingons in Star Trek. They oversimplify themselves as well, but there's much more to them in their past.