Earlier quoted context omitted.
Please take care when your Internet nutritionist calls ketosis a "fat-burning state". While true, it's also a lot like calling the Internet a "photon transport mechanism". If you experiment with such things, make sure you get the whole picture and is otherwise healthy. Ask anyone with diabetes why.
Vague hints to "get the whole picture" or to "educate yourself" without pointing to approved sources are always bad moves in Internet discussions. But here especially: Skimming the top 10 DuckDuckGo results for "ketosis fat-burning", I'm getting the impression that you would not approve of most of them.
The body is an amazing machine. It's still a good idea to at least try to understand the basic processes before making experiments on it. At least understand how ketosis works and why it isn't our default mode of metabolism.
While there certainly are people who feel that it is helping them, others would be actively hurt by it. Results on one individual can not be extrapolated into some sort of universal cure. The fact that such advice can be readily found on the Internet anyway probably shouldn't come as a surprise though.