Everything has already been said, but just to clarify:
As the moderator told you (and he's not a staff member, he's a volunteer community moderator), the only way to get an official response is by contacting support. The forum isn't usually monitored or answered by the staff (sometimes the administrator replies, but very rarely), so asking here isn't a good way to get an official response from the staff.
The community usually answers questions here. And as @redonihunter mentioned, Itch only has a binary flag that indicates whether a game has sensitive content or not, and the system that restricts access to that content is based solely on that flag. Then you have the tags, which allow you as a user to filter content, but at the Itch.io website level, there's no difference.
P.S.: Due to recent events, the staff is overwhelmed, and response times can be very long. Depending on your request, the staff may not respond at all.