The guidelines created by the USDA have always been and continue to be the product of corporate lobbying, not science. https://www.theverge.com/2016/1/7/10726606/2015-us-dietary-g...
I do agree the red meat in the Standard American Diet is a health concern, but that's because the healthiest options to consume red meat in our collective dietary preferences are still going to be laden with sugary dressings or carbohydrate rich mashed potatoes. Meat always comes with additional and excessively plentiful carbohydrates.