Hi,
Those 3 communities, hosted on lemmynsfw.com, have content that doesn't align with PornLemmy's ideals/morals/whatever, and therefore they needed to be inaccessible from PornLemmy. There is no way (yet, at least), to forbid a community from appearing on the front page but still be available at /c/community@server. If modding tools will become more powerful in the future and allow this kind of fine tuning, you will get access to all communities everywhere, but until then PornLemmy must act on its own rules. With apologies to you in particular.
Thank you. If there's ever a post you want pinned on the whole community for 48 hours, let me know.
I avoided naming them for reasons. Maybe people who know them can DM you instead of replying?
@alex
@pornlemmy.com