That's the way itch.io categorises them, yeah. Which I can see is its own argument to be had on how the site lists content and what is perceived as 'adult' by developers and players. I think in most cases, people only mark their game--and have it marked by moderation--as adult if it has that kind of explicit content.
Viewing post in Filter out the porn or I'm out
I would have let this go if it wasn't for the post making the complaint that the Adult filter does not work when it does: especially when new accounts are made, It's shut off intentionally.
Then the user who makes the topic posts pic's and claims it doesn't work; which tells me he's being a twit wanting to pick a fight, looking for special treatment or attention. That's what I'm pissed off about; I'm not pissed about the topic or the subject matter, I'm pissed that someone was trying to start a fight or looking for attention with a garbage claim that I know holds no water.
A lot of folks let this go by before; I don't care if folks wanna talk a out the NSFW in games, I agree it's a discussion worth talking about, but the way it was brought up was done in a manner to try and force changes and expect everyone and everything to conform to them, it's just trash and bad form.
Edit 1: Minor spelling fixes as Auto Spell Correct is trying to keep messing me up.