If you want evidence that the carnivore diet (I don't promote the keto diet) will reduce inflammation in patients with IBD then I can point you to a dozen stories of people who have cured their IBD through a carnivore diet. But you are just going to dismiss the evidence as anecdotal (nevermind that the anecdotes are endlessly accumulating) and not credible because you already have your mind made up.
If I were you I would actually try a carnivore diet for 90 days before making any more pronouncements, because I can assure you that YOU ABSOLUTELY DO NOT KNOW WHAT YOU ARE TALKING ABOUT.
The fact that people have been so brainwashed into thinking that eating red meat is by definition a bad thing is a severe problem in our society and it is people like you who are contributing to our epidemic of chronic disease.
I honestly find it hard to believe that you would post that comment with such confidence. Who do you think you are?