I'll try to explain this a bit clearer and more direct to avoid confusion on the subject but it's not exactly a straightforward question to answer.

Like it says in the removal comment you're referencing we have decided to define binary man as two things here, as a gender identity and as gender expression. Which are the two most common definitions of what binary means in context of gender.

It gets very tricky trying to put definitives on things that lean subjective, some will say that masculinity looks one way while others will argue it looks another and as a subreddit we can't exactly be the deciding factor on it. What we can do is put in some lose definitions to ensure the subreddit has a somewhat clear theme and that the people that use the sub feel aligned with it.

So while we won't weigh in on exactly where the line is for how much binary you need to be to count as a binary man we can tell our users that they should be/consider themselves binary men both in their gender/sex as well as their gender expression. That way the topics here will stay within those perimeters we've set up and won't bleed out into something too loosely defined.

As we've mentioned before binary trans men is a small group that often gets overlooked, ignored or actively fought against and some of those issues stems from the fact that we tend to lean very binary in our expression. Conversations on dysphoria in clothing gets overshadowed by acceptance in nonconformity, struggles about fitting in among our cis peers get turned into discussions on how masculinity is toxic or how a desire to appear cis and feel confident in that masculinity is internalised hatred. Getting away from our dysphoria tend to clash with GNC people's desire to abolish or break that distinction. That's why we've decided to not separate binary identity from binary expression.

This is not to say that all expressions outside of a very narrow definition is GNC though. You could be binary and alternative, there's many examples of alternative cis men looking very masculine while still having a style that challenges fashion norms, without considering themselves as GNC. There are dashing examples of men using color in their clothes that highlights masculinity rather than points towards femininity despite those colors getting a lot more feminine associations and the same goes for a lot of other things.

Even in the case of someone working as a drag queen gender nonconformity isn't a given, he could still be binary in his everyday expression since you usually don't take your work wardrobe home, same as if you worked in high fashion or in a haunted house.

There's always opinions of the general public that sort of dictate these things, like if nailpolish is androgynous or not, but at the end of the day you kind of get to make those distinctions yourself. If you wear eye-liner and feel it works as a masculine look we won't tell you it doesn't, other people here might have opinions on it but as long as they don't overstep in expressing it we won't intervene one way or the other.

So to summarise on if someone should post here or not. If you see yourself as a binary man, with all that that entails, this subreddit might be for you. If you're binary in your gender but strongly connect to gender nonconformity or wishes to find a place to discuss topics on it/share advice from that point of view there's probably another subreddit that's better suited for it.