Do people gain weight when they switch their SAD out with whole grains and carbs like legumes? I'd wager the evidence says no. Is that what the diet looks like

Do people gain weight when they switch their SAD out with whole grains and carbs like legumes? I'd wager the evidence says no. Is that what the diet looks like in obese people? Frankly it sounds like exactly what obese people should be eating: swap out highly palatable foods with beans, broccoli, and bulgur.