Yeah, in a no feat campaign, the incidents of polearm characters was comparatively low. Greatsword and Greataxe characters were still somewhat common, but nowhere near as common as in a feat campaign.
Because PAM and GWM are so OP, they significantly skew the results when I was playing in AL. The frequency of polearm users, and now spear and shield users, is almost exclusively because of mechanical advantage.
That's fine, but it needs to be recognized.