I saw some people on Reddit saying how in real life pure breds or extreme case bred for show animals grow up very sick or just die. Alolan Persian is probably that representation of the animal growing up very ill since the website's description says Meowth was bred by Alolan Royalty. They probably only cared for Meowth and didn't consider what that would cause to its evolution. Feels like just another joke Alolan mon except no one finds it funny this time.