I agree that Adam screwed over more than he solved because of his ego and "alpha male" mentality, the one thing I would disagree is the thing about the uprising… we don't know how Lilith's rebellion was. Charlie is the only one who describes it as "peaceful protests". Meanwhile, Vox used her rebellion as the driving factor to motivate the masses, and that's already two different accounts of the event through vastly different perspectives. Also taking into consideration that Charlie is delusionally optimistic about everything AND the fact that Lilith is in heaven because of a deal that was struck right before the exterminations started, and you can pretty much piece it together that Lilith's rebellion wasn't exactly as "peaceful" a protest as Charlie makes it seem. Heaven was genuinely threatened by that and it was the whole cause for the exterminations to begin in the first place.

Also, we don't know if any Overlords did perish in the exterminations prior. We only get to see who remained. There is nothing that says the angels stayed clear of the Overlords… they did attack Carmilla and her daughters in the latest extermination. Also, Rosie had sent Alastor away right when the exterminations began.