The whole point of Poe's Law is that you can't get away from it even if you ham it to eleven, or even 38.7 gigahams/second. Unless you explicitly state 'This is satire. That stuff is bad,' there is little to no way to tell if it's satire or extremism, and even if you do make it explicit, there are always the idiots who won't notice that part and assume it's sincere, (see naive interpretations of Starship Troopers) and those who willfully block out that part because they sincerely hold an opposing view. (See white nationalists opinions on American History X)

No one is saying it's 'not allowed' for people to make those things. They're saying it's literally impossible because of how the media work. The kind of people who are saying 'you can't' would love it to be possible. If we could movie our way to a utopia, it'd be awesome, but it seems we can't.