The problem is when you’re a woman in those situations you tend to be so shocked and taken aback by someone just being so bold like that, that you very rarely have time to think of a good response to point out what an idiot they are. It’s 30 mins later when you’re reflecting that it all comes to you.
I’m very sure she’d have hesitated to post the whole thing and then thought “f£&! it! That’s the best response”. The intention is to not kill all interaction, it’s to point out that people need to not always think they’re better - start a conversation a different way, be humble!