There are vegetables grown without pesticides and other chemicals. So, red meat isn't necessarily safer. Especially if the cattle have been raise on antibiotics and growth hormones. Organic, minimally processed foods have fewer of these additives.
BTW, did Kim even encourage Bryan at least try eating some vegetables? By educating him about value in meeting the body's nutritional needs? Or, did she just throw up her hands in "surrender" too soon?
Eating too much red meat can stall weight loss. It's still high in fat and calories. Especially the "prime" cuts. Which are also high in saturated fat. Too much of it can raise cholesterol levels, raise blood pressure, and lead to heart trouble.
High sodium intake can also affect blood pressure, heart health and weight, from water retention. The scale can't differentiate between fat. Or, retained water. But, it will determine the winner.