Very bad science in your post.
Unexplained high creatine is a sign of something going wrong, yes.
Just like unexplained weight loss can mean lots of bad things.
High creatine because you eat properly (meat) or take creatine has never been showed to cause bad things.
In fact, high creatine not only helps your brain, it can help your heart keep beating (without damage) during the critical 30 seconds or so of a heat attack.
All this bad science being repeated comes from the same group of scientists who say weightlifting is bad and the Covid shot is wonderful and should be mandatory. Oh, and don’t eat meat and eat 70 servings of grain a day. It’s all junk.
My advice was to consult your Doctor. I still think it is good advice. Having suffered from liver difficulties (liver cancer and cirrhosis), I am forced to monitor my creatine levels constantly, so I have a better than normal experience of monitoring rise and fall of creatinine levels due to internal and external stimuli. Anyone who takes on a ‘program’ of unusual diet should always consult their Doctor, regardless of whether you believe the science or TV commercials.