Women, just like everyone else, probably wouldn't want to deal with sending in an ID just to use an app, and they would probably be wary of sending it. Also most people show up to boards to make some posts to see if they like it before diving in, so that level of commitment is going to deter most of the more casual (aka fun and nice) ones.
Basically, you're going to wind up with a userbase of fucking psychos and antisocial fujoshi-esque degenerates. I hope it would still be readable by the public, because it would become one of the most toxic places on the internet.
Further...sorry Josh, but the weird desire to own women-only boards really comes off as very bizarre and tranny-ish. So it would be a board only for ID-verified women, except for him, the man who runs the entire thing, and I guess will just hang out as one of the girls? That's creepy.
This is a fantasy most actual women probably aren't that into. Most women don't care that much; they simply don't want miserable freaks taking over everything and shutting down conversation or demanding nobody enjoy themselves.
The women who DO entirely want men gone are usually trashy and insane and will not be positive elements of a community. He could have some
Alyssa Mercante types, I know she has a tattoo about how all men are enemies, even though she has a better than average likelihood of sucking off any she meets.
Finally, would a 3rd party verifier even participate in that? Is it even technically legal to deny service based explicitly upon ID gender?
The whole thing seems like it would go poorly.