Perhaps subscribe to communities that aren’t for porn!
I think the problem with your suggestion is that NSFW-ness more of a spectrum.
- Memes are NSFW if you’re under micromanagement and time pressure.
- Porn is NSFW if you’re working in a childcare centre.
Meanwhile both are SFW if you’re in your pyjamas and working from home.
I’m ashamed to say I’m still using Reddit