I would drop it where an interlocutor is specifically referenced. So 'oh man' is ok. But c'mon man usually expresses disagreement with a specific person. So wh

I would drop it where an interlocutor is specifically referenced. So 'oh man' is ok. But c'mon man usually expresses disagreement with a specific person. So while I would certainly say c'mon man to a trans or cis masc (which, if I had any shadow of a doubt, I would determine by querying their pronouns, after sharing mine so as not to inadvertently put them on the spot), I would definitely not say it to a trans or cis fem, and also not to an enby. Someone's life obviously takes priority over gender sensitivity :) Again, I realize it's a bit of (cognitive) work, and takes some getting used to. But this is hacker news - a certain intellectual pedigree is assumed.