Asa woman who hangs out at tech events, I've had people make all manners of offensive jokes around me. And a really great way to handle it is to talk to them about it. Or ignore it. Or talk about it loudly in front of them with my friends. Putting someone on public blast for something overheard, and then writing a douchey post about how you're creating safe space for future generations... is just pathetic. Be a !@#$ adult about it.