Earlier quoted context omitted.
Sigh, I'm all for calling people "she" if they desire, but this feels like a pointless comment. Do you know that the person being referred to (user "jordigh") would prefer to be called something other than "he"? Do you know whether or not the person you're replying to has done the research on which word to use? If you don't know, you're wasting our time with snarky but baseless "PC" attitude. At least put in a few mo…
As the person whose gender was in question, I appreciate the doubt. I don't think you had any reason to believe that I was male, and male should not be the default gender.
I don't have a problem with your response in general, or ideas like "male should not be the default gender". I often try to avoid using gendered pronouns, for reasons like this. If the original person had said something like that, I probably wouldn't have replied. I do have a problem with someone casually questioning the use of a word, without demonstrating any consideration of whether it is actually correct, whether an effort was made to make sure it was correct, etc. For all we knew, the person who used "he" personally knows you, and mindfully chose to use a male pronoun. That uninformed, knee-jerk reply ("He?") is as useless and obnoxious as having a bot post "PUBLIC SERVICE ANNOUNCEMENT: REMEMBER THAT NOT ALL HACKERS ARE MALE. WE WELCOME WOMEN!" every time someone uses the word "he."
Really, to go full-on PC for the benefit of trans people, etc., I guess we can't use gendered pronouns even if we do know someone, unless we have been explicitly (and recently) told which pronoun they prefer.