I read a sentence in Word by Word by Kory Stamper which was:
If you ask a modern adherent to this rule why, exactly, you aren't supposed to end a sentence with a preposition, they merely goggle at you as if you had just asked why you aren't supposed to lick electrical sockets. Because it is objectively better not to, that's why.
The fact that the "objectively better" part is italicised as well as answer both the above mentioned questions makes me think that the author is making a pun here. Regarding the latter question, I think the word "objective" means "based on experience and facts" and regarding the former question, I think it somewhat relates to the "objective case" we learn in grammar. But I am still not sure. Am I right?