“Proven false” clearly isn’t the standard. Nobody has proven the election fraud claims false. (Or the Hunter Biden e-mails story.) Like AOC’s misinformation about climate change, the conclusions are just extremely unlikely based on the facts we know. That’s been a high enough bar for censorship.
If it’s been proven false, don’t say it. If it can’t be proven false, carry on, as that’s not against the terms and conditions.
Or, a false equivalency between saying the election was stolen, and saying the world will end in 12 years if we don’t do something.