Again, I teach high school students. I don't think they need yet another avenue to be bombarded with the message that "attractiveness certainly plays a role" in how valuable they are or how successful they can be. Can't at least our fantasy worlds offer them a safe space from that constant BS?
Again, we are in the same boat, but on different sides. If you say this about beauty, then why not say this about strength. I mean, I am sure there are players in your D&D club that
wish they were strong in real life, but are constantly out shadowed by the football players, the wrestlers, and any male who hit puberty one or two years earlier than them. Yet, D&D encourages this in the realm of combat and athleticism, arguably, the two most used functions in the game. And let's not even discuss intelligence. I am sure you have students that are not on the 4.0 stream. They may struggle greatly in all their academic areas. Yet, here you have a game that actively encourages players to "not be smart." I have seen more than my share of high school D&D clubs poke fun of the barbarian with an 8 intelligence. If that was a student that struggled academically, I am sure it hit a little close to home.
And then there is adding one word, "beauty" to charisma. A word that will probably be read by a third of the players. A word, that is a pebble in the boulder strewn stream of social media, including geek media. Anime, Critical Role, geeky actresses, pictures of heroines, etc... I would argue all of those play a much greater influence than adding a word to a definition.