And…so? Someone mentioned Toph, you asked who that is, and someone gave you the answer. Nobody was saying you have to like it or even care. It’s a common inspiration for contemporary D&D, what with Avatar: The Last Airbender having been a wildly successful series and remaining very popular, including many viewers who don’t care for typical anime-related stylistic conventions.
I know about lots of things I don’t care for. Whenever I learned because someone answered a question of mine, I’ve always found “oh, okay, thank you” to be a good answer. I recommend it over arguing that it’s better to not like that thing.