Look to South Africa as an example of why things are happening the way they are. Simply going out and arresting your predecessor is a risky political move.
You can see how South Africa destabilized and mass fighting began in the streets very shortly after that happened.
This is why the plan is the way it is. Remember that.
That's pretty much how the Roman Republic became the Roman Empire. Senate was corrupt af, they fought a war against a general trying to implement some reform (Caesar) who they assassinated, but that didn't solve the problem, it just led to a power vacuum filled by another strongman (Augustus).
History repeats and repeats and repeats.
Hail, Caesar!