I don't mind that but I don't like the idea that he has been playing with everyone's emotion. Especially Obsidian's and Platinum. Don't get me wrong, I don't like Platinum. But with his backstory. The only reason he joined the competition was due to Marianne. With that he was also willing to sacrifice his remaining lifespan so that Marianne can succeed the throne. (The only reason Marianne joined the competition was due to the fact that she needed someone to play king for her. The problem is, people sought for her due to the fact that she's a widow. People are vying for the position of Emperor. Whilst platinum on the other hand. He's goal is to help Marianne succeed the throne by becoming king and making a law that allows women to succeed the throne).
They didn't put much details into it but I'm a person who nitpicks on details so...
This is all part of Moon-owl's manipulation to garner views from the audience. Getting Obsidian to fall for platinum, tricking platinum into thinking that Amber is the real Marianne.
And as well as forcing Obsidian to join the competition against her will (Tempting her with an offer she can't refuse "freedom to her husband).
Like literally. Everyone is under Moon-owl's puppetry. It's all going according to his plan.