I heard it on a recent podcast, I Know Dino, which is really good, btw. I'm not sure if it was the newest (as of 08/05/2024) or one from a few weeks back. It was a short discussion. Like I said, I don't know how serious is the proposal.
Oh, and there are serious astrophysicists that do think Pluto and all dwarf planets should be considered planets. Idk if I agree, but I see where they're coming from.