i dont know why this thread has so many replies and arguments. its fairly simple to weed out males online, theyre so glaringly obvious.
1) they talk about sex excessively. they bring sex up when nobody was talking about sex in the first place, they make sexual innuendos and jokes excessively and inappropriately, they will lead the topic of discussion, no matter how non-sexual it is, to sex. *this isnt to say women dont talk about sex, they most definitely do, but it lacks degeneracy. even if it does contain degeneracy, female degeneracy is very different from male degeneracy.
2) since were on the topic of male sexual degeneracy, when they talk about sex it will include BDSM, rape/non-con, loli/underage, femboy/futa, feet, coprophilia, giantess, vore and many other degenerate kinks concentrated in males.
3) like many other women in this thread have mentioned, typical male behavior. they will try and assert themselves as intellectually superior to you. you will find youre defending yourself in the middle of talking to them when you were initially discussing a very innocuous topic, or a simple difference of opinion. you will also find them starting arguments for not reason, also over simple differences of opinion when it comes to fairly innocent topics. they have to be right, always, and anything other than their opinion is wrong and must be corrected. they will talk to you like youre dumb and quiz you unnecessarily on topics of mutual interest because women are too dumb and vapid to enjoy things as deeply as they do, to enjoy things that arent stereotypically feminine.
4) political beliefs. it is so easy to spot a male based on their political beliefs. i dont really have to explain it, its stuff regurgitated from /pol/ on 4chan, youll know it when you see it. like sex, they also have a tendency to lead the topic of discussion back to politics, or bring it up unnecessarily.
thats about it. its especially easy to weed out males on public discord servers because you can look at their chat history and look for male behavior. unfortunately, most public discord servers are overwhelmingly male, so youre better off making your own server and adding women on an invite only basis when youre sure that theyre women. best of luck to you nona.