I think you may be missing a few things. Fiber is important to avoid painful stool compaction. Soluble fiber also slows carb absorbtion and lowers the glycemic

I think you may be missing a few things. Fiber is important to avoid painful stool compaction. Soluble fiber also slows carb absorbtion and lowers the glycemic index of a meal which is generally a good thing. As to your macronutrient concern, unless you are trying to eat 4000+ calories which is about when it becomes a chore to eat (I once had a job where I lost weight eating less than that), high fiber food isn’t going to make it hard to get your macro nutrients with most modern diets. And foods high in fiber tend to have more micronutrients. For instance the germ in whole grain is literally the nutrients needed to kickstart a seed into a plant.