"At best leading to the installation of a different autocratic regime more amenable to US interests" seems like a pretty fine outcome in US eyes, doesn't it? Outside of Israel, is democracy in the Middle East even realistic?

An autocrat regime friendly to US interests, who we could do business with, who won't pursue nuclear weapons, and who won't imperil US allies or the Strait of Hormuz would be a drastic improvement over the current state of affairs.

We don't need to nation-build to have a good outcome for the US: that's something we should've learned after Iraq and Afghanistan.