the age rating of steam games doesn't apply to the workshop submissions.
check the user uploaded category under the rules https://steamhost.cn/help_steampowered_com/en/faqs/view/6862-8119-C23E-EA7B

Originally posted by Spekulatiusspekulant:

Hello, I'm currently working on a room that involves a murder of a woman by an obsessive man. Using AI and Photoshop, I created a poster of a bikini model and created a face of the woman (also AI generated). I was now wondering if this is too suggestive? The game has a PEGI 3 rating and I don't want to break any rules. So the question is, is this already too much? The picture I am talking from: https://imgur.com/a/nuhbBYS

As ChesseTheWasp said, you are free to do whatever you want but please tag your room with "Has profanity" tag. You can find it under publishing options > tags. https://i.imgur.com/QynBHlv.png
Also to keep the game PEGI 3 we don't feature or promote such rooms, but most of our players are 18+ and fine with it. If it's really too much (racism, hate speech,...) we'll ban it from the workshop, but the bikini model sounds totally fine.

PS. Thank you for asking btw!