Consent is meaningless and immeasurable in such autocratic and repressive societies. The 'tyranny' of the liberator is subjectively but definitely better than the real tyranny of the oppressor. Some values shouldn't be tolerated, especially when they infringe on the rights of others.
I’ll grant that nations with the means to do so ought to intervene in order to put a stop to genocide or some similar humanitarian disaster, but are you seriously suggesting that NATO should invade Saudi Arabia and imprison its royal family?
Morally and ideally speaking, yes. There are of course pragmatic concerns, but they must be separated from the moral concerns so to not lose our moral compass to political necessity, as so many have.