I suspect that they're making decisions based off of data. They know, for instance, how many players are actually using shove as a bonus action, and they're factoring that into the balance of the game without having to rely on Mr.-Forum-Resident-Kruger to explain how it's "objectively" wrong.
But relying only on the data would be an error. I'm pretty sure most of those who disapprove of shove as a bonus action still use it all the time because hey its there you may as well do a shove after your attack. Thus the data alone would not give a complete answer as to whether players prefer that option.
