I really don’t get why that would be a problem. Personally, I would be delighted if we had more than 9 planets. “Oh no! We can’t have Pluto be a planet cuz then we’d have 5-10 more bodies that we’d have to call a planet too!” So what? Give me 15 planets; hell give me 50, that sounds so much cooler than reducing the number of bodies in the solar system people care about by 1.
I really don’t get why that would be a problem. Personally, I would be delighted if we had more than 9 planets. “Oh no! We can’t have Pluto be a planet cuz then we’d have 5-10 more bodies that we’d have to call a planet too!” So what? Give me 15 planets; hell give me 50, that sounds so much cooler than reducing the number of bodies in the solar system people care about by 1.