To quote the article "red meat (burgers, steaks)" - one of these is not like the other. Even so, there is a word of difference between the meat of an unhealthy animal (especially the fat) and a healthy one.
It does seem that anecdotally a meat-only diet resolves chronic inflammation: reddit.com/r/zerocarb
Unless you think her story is entirely fabricated, it's a strong anecdote to support a meat-only diet can alleviate inflammation. I mean, she claims to have had hip and ankle replacement at age 17 because of arthritis. All of these conditions subsided on a meat-only diet and promptly returned when she attempted "cheats" (one she mentions is soy sauce).
It does seem that anecdotally a meat-only diet resolves chronic inflammation: reddit.com/r/zerocarb