You're right and OP is right with their "Edit 2" comment. People ARE assholes (anyone who's worked a retail/service job can attest), and this sub IS full of sanctimonious Redditors who claim moral superiority in one sentence and toss mud at you in the next.

What actually was said by OP is unknown - they could very well have asked if they were "all set" with that sarcastic attitude and tone I'm sure you've heard before - but we're supposed to give people the benefit of the doubt until proven otherwise.