This is what I came to suggest! I love Tasker! It definitely can feel daunting when you first start out, but there are lots of guides and tutorials out there to help.

There was a post recently about NSFW tags possibly not federating properly, and I wonder if that might be what you’re running into.

In terms of a real, solid solution, I don’t know what the best course of action is. But as a band-aid solution, you could try an app that allows for in-app server blocking. Lemmy itself doesn’t allow users to block an entire server, but Connect at least (and probably others) allow it on the app side. But it wouldn’t help on anything other than the app, so it’s definitely not the ideal solution.

I’ve been using these, but I’m sure there are many other choices that are just as good!

I also bought dimming stickers. I can’t tell you why everyone uses them, of course, but I bought stickers rather than using tape for a couple of reasons. The main one is that there are some lights that indicate information I still want to get. Our fan has LEDs to indicate current speed, my wireless phone charger has a light to indicate that it detects the phone. That information is good, and I want it! Just not as brightly as the manufacturer wants to give it to me, so I put stickers that dim about 75% and they’re perfect. The other big reason, for me, is that I simply find the stickers more aesthetically pleasing. Even if I want to block the light fully, rather than just dim it, a little circular sticker looks nicer to me than a piece of tape.