I don't know of any memes where people say it's OK to eat fat in excess or pretend "it doesn't matter". Even the extreme low carb diets aren't about eating fat in excess - if anything, people on those diets tend to lose weight because (a) not being able to eat any carbs gets monotonous fast and (b) fat induces a feeling of fullness, so people eat fewer total calories.

It doesnt' matter in the sense that like 80% of what's in the typical American diet is far worse. All that fat that got removed was replaced with salt and corn syrup.