The diet that we evolved to consume (fruits, lean meats and fibrous plants) was much less damaging to our teeth than the current high-sugar, high-fat, highly processed foods. And human lifespans was shorter, so less time for teeth to damage. So there wasn’t a strong evolutionary need to regenerate them (unlike an animal like sharks)
there is a lot to criticize Disney for, but at least they are not pushing hateful and harmful content like Fox News (which is the only part of Fox that Disney doesn’t own), the Sinclair Group or some state-owned media like Russia Today does