"All sovereigns are abusive. Grace is but a phase; temporary, short-lived." They took the throne, and over time, the throne took them. Cronus had been equal parts kind, and foolish. Benevolent and malevolent. They were all corrupt - there was no difference between them.
Cronus didn't have any intention to accept her offer. They chose their sides when the world began and now that the world was slowly ending, he'd rather not have to deal with traitors and double-crossers whilst at the same time juggling everything else he shouldn't be having to worry over at his age.
"Who you choose to align yourself with - that is your decision." When the house of cards came crashing down, the consequences were for everyone to bear, regardless if they won or lost.