First, you’d think the same thing about almost any crime but there’s a long history of that happening.
More importantly, however, as I explained you’d see the presence of that policy even if they managed to keep the conspiracy perfectly. There’d have been cases where something didn’t meet the rules for being banned but someone overruled them to do it anyway, unexplained policy changes following a private meeting, someone setting out hard lines for the moderators, etc. Twitter had a ton of people doing moderation and there’s no way you get that many people to work on a daily basis without stated policies or someone accidentally saying something they knew, or that not a single one of them wouldn’t have gone public or talked to Musk.
