I’m sure the audience will find it anyway without spamming the entire Fediverse with your porn preferences. Announce it on your nsfw instance and it will be sufficient.
Edit; oh boy, the gooners sure are taking this personally. Chill nobody is taking your porn away but also nobody cares about your little porn kingdom.
Edit 2; it seems that there has been a cleanup and the admin at that porn instance is working on it too.
Final edit: Now I know what hell it must be like to be a teacher with an unruly crowd of horny teenagers that can’t think beyond their genitals. Oh, well.
Lemmy doesn’t offer a community-specific NSFW filter. It’s all or nothing, and “NSFW” is a broad category that includes other things in other communities that people do want to continue seeing.