Are you trying to make a point that it's unrealistic? Because there's definitely people that don't have to brush their teeth daily to maintain great dental health. Calling it magical bacteria is a bit of a hyperbole, but I figured anyone reading my post in good faith would catch that.
Do you have a source of this claim that people exist who dont "need" to brush their teeth?
I've never looked into the facts, but anecdotally I've known of two close friends who never (and I mean never - not an observation, but an admission) brushed their teeth and never had one solitary cavity. They ate pretty normal American diets (meat, sugar, carbs, soda, coffee, but nothing in excess). Additionally, I've heard this same second-hand anecdote from others multiple times in my life.
Seems like an unnecessarily condescending comment
Weird that the parent comment somehow triggered this person. I’d be curious as to why, perhaps a dentist or a dental sympathizer?