

My understanding is that’s deliberate. The Wacowskis were done with The Matrix, the original trilogy (+ Animatrix) was the complete package. But the powers that be demanded more to milk the franchise, and when the Wacowskis tried to push back, the higher-ups said they would do it with or without them. So the Wacowskis are deliberately sabotaging the sequels, and good on em.
Teeth falling out is a vanity dream, common among people who worry a LOT about their looks. Actors, models, government officials who need a makeup studio at the Pentagon, etc.