That doesn’t seem suspicious to me at all. All else being equal, people tend to favor familiar options over new ones. A change being additive like weapon mastery, or perceived as a needed fix like species ability score adjustments tip the balance in favor of that change, but other changes have to overcome that bias towards the familiar. Also, you seem to be overlooking changes that did overcome that familiarity bias, such as subclasses starting at 3rd level for all classes, all feats being “half feats”, and a bunch of spell and rules glossary changes.