Three permit was for 30,000, but I don't see any real estimate of crowd size. Hundreds of thousands seems high, but could be.
300 in the capitol - ok.
They broke into the capitol building chanting hang Mike Pence after building a gallows with the intent of rioting. They also wanted Pelosi. I will grant that but everyone there knew the plan, but some did. The others had been primed and radicalized to be up for anything. There are also accounts of other protesters trying to talk the rioters out of it.
Is it possible there are things on unreleased video that changes things - I suppose, but I can't think of what it could be that no rioter has mentioned.
Your definition of insurrection is off. Race riots have happened for all of our history, including the new York draft riots during the civil war where the Irish rioted against being drafted. They suck but they aren't an insurrection. They weren't an attempt to actually storm the capitol and change the results of an election.
I think there are parallels - people with perceived injustice reacting violently. I have all sorts of sympathy for the Jan 6 people. They reacted to a lie. They were primed by a liar who they wrongly trusted. If Trump was telling the truth then the rioters were actually Patriots. But that's the thing - it wasn't true.
You do know the globalist conspiracy has been a red herring since before Henry Ford published the international Jew? Maligning your political enemies and minorities and implying they are part of an international plot is a tried and true method of making one group feel like they are under attack. It lets people justify so, so many things.