If there are basically no skulls to be found with misaligned teeth and jaws, then what the article says is the mainstream explanation of this - genetics - has to be wrong, because genetics in humans doesn't do anything in 200 years. Especially not going from "~100% good outcomes" to "the majority of individuals have malformed teeth". Literally any other explanation is more plausible. Changes in food seems very plausible. Changes in upbringing as well.