Drowning food in sauce is bad when the sauce is mostly sugar, like ketchup, or seed oil, like basically any salad dressing or mayo (even those marketed as "avocado" are often majority seed oil). Salt and saturated fat mostly have a bad rap based on shit science. As long as your kidneys are healthy any excess salt will be urinated out. Medieval Europeans had something crazy like 30 times the salt intake of the modern western diet. Koreans have at least twice the salt intake as Americans but have much less hypertension. Any sauce made with healthy animal fats is a healthy addition to a meal.