If I offended anyone, I apologize. But man... People like you make this shit look bad (I know this is old, I just saw it).
I respect people's choices with respect to gender expression. What I don't respect is people who use that shit as a cudgel to censor opinions they don't like that are entirely unrelated to that subject.
That person had NO pronouns listed next to their name. I frankly don't clock people's usernames before commenting so had no idea what their username even was. That said, one could argue that the name Emily implies nothing about a person's preferred pronouns. Unless you know them personally, or they complained personally about this, then YOU are the one assuming gender and pronouns. Fuck dude, why am I even assuming that the person's username is their real name? Oh no, I just said "dude" are you going to ban me?
Two people who have never seen/heard/spoken to one another discussing something on the internet, and one is supposed to, what, intuit the other's preferred pronouns? What if Emily did not identify as a woman, and you just corrected me? It's almost as if "cool man" isn't gender specific anymore, and you know that.
They develop software on Marshall Full-Stack amplifiers, rather than the smaller, less powerful Half-Stacks.
Hope that helps clear things up.