These formulations are dairy-identical on a molecular level but without allergens or other unfavorable attributes.
I don't think the article mentioned it and I'm not really familiar with the science, so I'm somewhat confused about this comment in the article. Does this mean that people who are allergic to casein itself can eat their new formula, or is this just a weird way of saying people who are allergic to lactose and similar things can eat products with this casein?