You’re getting the 2016 and 2020 primaries confused. The “Shadow App” thing happened in 2016. And it didn’t give Iowa to a “complete nobody,” but to Pete Buttigieg.
It definitely happened in 2020 - Pete didn't even run in 2016! And he is a nobody, he was a mayor with no other prior office and he never won another contest.
Furthermore, you just described strategy, not a “fix.”
When the entire DNC covertly coordinates together in a strategy to stop a single candidate, it's a fix. That's not a strategy that any candidate could ever use, that's the whole Party working together to stop an outsider.
That, plus the Shadow App (which definitely happened in 2020 wtf I live in iowa I would know!) were what convinced Bernie supporters to stay home after Super Tuesday.
And it's why I'm voting for Cornell West. The Democratic Party is not the path to socialism, we can not ever change it from the inside... I mean the Green Party isn't a path to socialism either, but at least it pisses off Democrats 😘