Not every communication channel is an appropriate forum for airing your political and social views. Can you imagine having to be a moderator for a company like that? Worse: can you imagine having to be the person responsible for setting the company rules that the moderator has to enforce? Do you think that it’s even possible to list every type of speech that is allowed, every exception to a general rule, and every other tolerated behavior? Of course it isn’t. That’s why teams set general rules to make things easier and ensure fairness. Rules like “no political talk” or “no real world controversy.” That way, they don’t have to take a side in any debates and they can ensure that the moderators will treat each instance the same, regardless of their own personal views. It doesn’t matter if the moderator is themselves a fascist, or lives in some country, or supports some cause, because any talk about those subjects at all gets the boot, no matter which side is doing the talking. And every moderator will react the same because it doesn’t call for much of a value judgment, so you can ensure consistency.
Besides: why would you think that a Twitch stream from a gaming company would be the right place to start a debate about Italian political history?
If you don’t believe the wiki, here are DE’s own publicly available drop tables: https://www.warframe.com/droptables