Is there a way to block instances on the app?

https://lemmy.world/post/1391114

Is there a way to block instances on the app? - LemmyWorld

I see random posts from lemmynsfw that aren’t marked nsfw and it’s quite jarring. Can I block the whole instance?

There is currently no way in Lemmy to block and entire instance as a user. Only the admin can do that.
Connect allows this. I don’t know how specifically, but it’s possible on Connect
It would have to be client-side filtering. Just fetching and then not displaying affected posts and comments.
I haven’t tried blocking an instance on connect but I find blocking communities can be hit or miss. I block all the nsfw ones and refresh and see the same posts I just tried to block