Veganism isn't healthy by default

Veganism promotes Diabetes, dental diseases and muscle wasting.
I'm not saying a proper, balanced vegan diet can't exist, but 99% of vegan either can't afford it or don't follow such a diet. In fact most vegans diet is incredibly unhealthy carb-fests(fruits and sweet vegetables, and "healthy" nuts/legumes with high carb content).

First carbs ruins teeth, carb-heavy diet will 100% cause caries and cavities even with daily flossing and brushing. The sugar in the salive itself will feed bacteria.

Second, carb heavy diet forces one to store carbs as fat, gaining weight and edging close to diabetes which is fueled by carbs.

Third, muscles need exercise and protein, most vegan consume either too little protein or slack off on exercise(causing weight gain with carbs) making their muscles weak and malnourished.

Fourth, carb-centric diet of most vegans lead to premature aging with Advanced Glycation End-Products(fried/baked sugary foods)."stiffer and more brittle cartilage"
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1221264/

Fifth, carbs directly cause aging with their hormonal/genetic impact.
http://www.versiondaily.com/the-link-between-aging-and-carbohydrates/

Its a major blackpill to consider all sweet foods(such as fruits) are ruining your health, that many will rationalize it away as coping mechanism. Breaking the carb addiction is hard, its ingrained in culture and modern medicine that "you need to eat fruit" aka 'balanced diet with N fruit portions' - just remember 90% of fruits are essentially vitamin candy.
I also thought i'll be missing vital nutrients and vitamins, but i now see that most nutrients/vitamins can be obtained from low-carb alternatives and multivitamins/supplements.
Example: Tomatoes are rich in lycopene, but there other sources such as rosehip that contain far less carbs and supplements that contain none.