On every website I’ve ever ever been on, opting in for NSFW means opting in for porn. If you don’t want porn, disable NSFW, and block any communities that don’t use proper NSFW tags. If you want to sometimes view NSFW/porn, but not always, make an alt account, preferably on a NSFW-focused instance.

I learned this lesson on Mastodon, but all means ALL. It is an uncontrolled firehouse of posts without any algorithm to filter it. By design, if a single BeeHaw user subscribes to a porn community, then the entire instance shows up in everyone’s all feed, unless BeeHaw defederates.

You could always make a feature request with the Lemmy devs, but they are swamped with all the bug reports and feature requests. There is no way to tell when or if the feature you’re asking will be implemented, and when BeeHaw will update to it. So to answer your question, no there isn’t. You’ll need to disable NSFW.