It's easy to see both sides here. The disagreements will probably never be resolved on this issue in our lifetimes.
I have decided that it is the consumption of the flesh that can be detrimental, so my solution is to make stock. It's still animal consumption, but much easier on the digestive system. When prepared properly, a good bone broth has a protein sparing effect, which means a person can do with little to no flesh consumption but still have a protein source. There is a lot of benefit to the gelatin in this type of broth too. Think of it as a type of nutrient infusion.
While MH is probably right about the "ideal human diet", we do the best we can until we get there! I agree with MH about education, but as we see here, there are many different ways to look at an issue, even when there's "proof".