> Has calling someone entitled ever been useful? For the last few years it's felt like nothing more than a petty "you're wrong" remark with bonus condensation built right in.

In this case, calling someone entitled is actually a compliment, not an ad hominem insult or put-down, because it acknowledges the poster's humanity.

The proper response in this case would be, "Why, yes, I probably am a bit entitled, like most people. Thank you for recognizing that I am human."