https://lemmynsfw.com/c/chastitystories@kbin.social
works, but
https://lemmynsfw.com/c/tech@kbin.social
and
https://lemmynsfw.com/c/kbinMeta@kbin.social
don’t work.

Interestingly, the opposite is true for lemmy.world:

https://lemmy.world/c/chastitystories@kbin.social
does not work, but
https://lemmy.world/c/tech@kbin.social
and
https://lemmy.world/c/kbinMeta@kbin.social
work.

And it’s not a NSFW thing, since both of the following don’t work:
https://lemmynsfw.com/c/FuckingEvil@kbin.social
https://lemmy.world/c/FuckingEvil@kbin.social