your entire post reads like an abusive partner telling their spouse, "look what you made me do". Pelosi showing bad judgement in giving Republicans the benefit of the doubt pales in comparison to what members of the Trump administration actually fucking did.
You're right. So then, what should happen, instead of what actually has been happening?
Trump and many of his cohorts should have been subpoenaed to testify, and refusing to show up they should have been arrested and convicted and imprisoned for this crime.
And Pelosi or others who failed to do their duty, a much lesser offense, should simply have been censured by the Congress and forced to resign in disgrace.
So all those blameworthy should be given their appropriate punishment.
Why do you want to absolve the Blues of any blame and insist that only Reds/Trumpists can ever be investigated for wrongdoing?
I have the controversial opinion that when a coup occurs, you hold the people who actually did shit accountable first.
Why doesn't that include those who chose not to provide extra security to prevent violence, when this was an obvious choice for them to make? Why are they not also accountable for their shit as much as those who caused the mob to show up?
Then you dive into the hindsight arguments.
ALL of this is "hindsight," including the investigation into who planned for the mob to be there or who "actually did shit" -- that too is all "hindsight."
ALL the wrongdoing which ended up causing the "coup" to become lawless should be investigated, all of which is "hindsight" regardless whether it's Reds/Trumpsters or some Democrats who are to blame for negligence. You can't separate supposed "hindsight arguments" as having less priority or to be excluded until later. Congress can take action to punish those who are responsible for the lack of security. These ones likely had a sinister motive of wanting the coup to become violent so it could be used for political gain.
You could claim we have no way to determine their motive. But at least they should have to resign, for their irresponsibility, as many cases are resolved by those guilty not being convicted but having to resign in disgrace.
It was known in advance, by all those in high position, that there would be riots unless extra security measures were taken. This fact was known, from all the evidence so far.
Like I said - "Look at what you made me do".
This cliché is meaningless. The rioters are not saying anything like this. The ones responsible for the chaos are all those who told them to commit violence or who neglected proper preparation for adequate security.
If "Look at what you made me do" means that no one is responsible for what happened other than the particular individuals who rioted, then you have to let off the hook Trump and anyone else not actually present with them and storming the capitol building. Because you're saying it's not Trump's fault, or anyone else's, that they decided to riot, but only the fault of those individual rioters, regardless of anything that provoked them.