Could this have something to do with the nutrition science community's reversal of a decades old vilification of saturated fats, which tended to get replaced wi

Could this have something to do with the nutrition science community's reversal of a decades old vilification of saturated fats, which tended to get replaced with much worse trans fats? Saturated fats are absolutely necessary for brain function, and for a long while the standard recommendation was to avoid them like the plague.