You're wildly missing the point. This post will show up if you browse the /all feed, even if you're not subscribed here. NSFW tags exist for a reason. This is that reason. That's why it's in the community rules.

Cosplay does not inherently infer that it's meant to be erotic cosplay. In fact, the sidebar even says this is for SFW cosplay girls, and even provides a link to a sister community for NSFW content.

I'm not sure why this is so hard to grasp. Just follow the rules.