It's not nearly that simple.

And the person you're responding to didn't even actually deny that saturated fat is unhealthy, why jump on them like that? Needlessly inflammatory.

You should be careful about making blanket statements like "established science" and "science denial".

It makes you come off as an extremist, and in fact, the page you linked makes no such claims and is far more moderate. It talks only about potentially harmful dietary fats.

> Research about the possible harms and benefits of dietary fat is always evolving. Current evidence suggests that the smart play is to focus on choosing healthier fats and avoiding the less healthy ones.

Researchers (particularly those in the field of nutrition) have got things completely wrong before. An important part of being a good scientist is knowing the limits of the current body of research.