After seeing this forum thread, I began to wonder whether or not creating a tag (read: one tag) for when only one gender is visible, would be a good idea. This is not suggesting tags like male_only or female_only, but when used in conjunction of a gender tag would result in posts where only one gender is visible, IE male *tag_name* should show posts with only males.
The first problem brought up in Discord would be that all solo posts would innately have only one gender present, so included in it's wiki would be "this tag should only be used on posts not tagged solo". My problem, however, is in naming the tag: the only name I've come up with so far is clunky, single_gender_present. If anyone has any better names, or has concerns for the tag, feel free to bring them up. Otherwise, this tag would resolve the complaints involving people only wanting to see only X gender posts, without having the problem of such X_only tags by not being as hyper-specific as them.