You're invited.

It really depends what you mean by "happened". Lots of stuff happened. Lots of stuff was claimed. Lots of stuff resulted.

9/11 happened. There are lots of details about it that are fiction and a lot that are just incorrect. It's all very confusing and obscured and that's how they want it. Plausible deniability. Or in this case, not denial but plausible actuality.

May I ask why you refuse to look into it? By approving the submissions (I didn't know about that bit) you will inevitably be studying it.

When looking at the material, for the most part the skeptical content should be mostly racist free. For me it was initially difficult not to assume the people were all racist. Far from it. However there are some that insist on being vulgar and tainting their information. A racist can still be correct with information. I'm an atheist but still know religious folks can still be correct with aspects of history too.

I'd like to propose a rule for the /s/HolocaustSkepticism sub:
No racism or anti-Semitism allowed. Posted external content with racism may be permitted if their information is subjectively good (we can't help that their attitude stinks), but try to find better sources on the same info, and only so much will be tollerated. Clarity is paramount so be specific when referring to Jews and/or the state of Israel and/or Zionists. Moderators may insist that you modify your text accordingly to be specific.

I'd also like to include some clarification statements:
Israel is a state, and it's not anti-Semitic to criticize it, like any other state, for war crimes and crimes against humanity, among other things, including their Jewish supremacist and apartheid policies.
Jewish people are just part of the sheeple flock of humanity, and they are as deceived, manipulated, exploited, and victimized just as any other community can be, and they, like all other sheeple are guilty of not waking up to the ruling class exploitation. Not all Jews share the same values or heritage and to lump them together is wrong. Many do not buy the Holocaust or 9/11 narratives. Many feel like they are the chosen race. Many don't care about any of this.
Zionism is an evil ideology bent on full spectrum dominance and enslavement of humanity by any and all means that has infiltrated and intermixed with Royalty, Freemasonry, NeoLibralism/NeoConservativism, Wahhabism, all governments, the military industrial complex, Wall Street, and Hollywood in a authoritarian globalist technocracy-corporatocracy. Zionists include Jews, Muslims, Christians, Catholics, and other faiths, but they confuse this fact by using the brainwashed Jewish population as human shields and claiming that anti-Zionist views are anti-Jewish or anti-Semitic when that's far from true.

This first draft might be edited down. But that's the sentiment.

We could add this section or leave it out, up to you...
See also:
/s/AlternativeHistory
/s/askhistorians
/s/economics
/s/EconomicsTheory
/s/fakehistoryporn
/s/FakeNews
/s/history
/s/HistoryVideos
/s/Holocaust
/s/Israel
/s/Jews
/s/Judaism
/s/Justice_v_Injustice
/s/propaganda
/s/PsyOps
/s/Race_DivisionByElites
/s/Religion
/s/TheHolocaust
/s/USIsrael

Eventually it would be nice to start wiki pages too. I would start with the legalities of questioning a story that we are not allowed to question, what regions have 1) made it illegal, and 2) actually persecute folks, and 3) how vigorously. If you can't question it then what are they hiding?

Humour may be a tricky thing to moderate. A joke about 9/11 may be tasteless, but it's not illegal, nor does it have a potential racist angle. But often the jokes are not even aimed at the alleged victims, but rather aims at the absurdity of the propaganda, or of the believers of one story or another, or the government and/or media.