I mean, I agree with all of your points... I'd just point out that near none of the monarchs in the Witcher world are very nice people.

Foltest does nothing to protect his subjects because of his incestuous relationship with his sister gave him a daughter that, in practical terms he could do nothing to help until Geralt came along.

Emhyr is a ruthless and brutal tyrant who will have the entire continent even if it means the northern part is completely bereft of people by the time he's done; and potentially, might have joined Foltest in the incest club if he hadn't suddenly had a pang of conscience.

Demavend, Henselt, Vizimir and basically all the northern monarchs except for Meve had a meeting and decided to butcher Ciri if she were ever found, purely so that Cintra as a legal entity would be left in limbo with no one able to claim it.