I'm sure
this has
nothing to do with his little n=1 experiment "destroying" CICO. Or
this.
Okay, I looked into this a little.
1. He didn't know what he was eating at before nor did he measure his TDEE. He estimated it only. However, people are terrible at estimating how much they eat.
2, He got sick in the middle of his "experiment", which is when most of the weight loss happened.
3. He never weighs any of his food during the "experiment" and estimates calories only.
4. He eats a lot of nuts and seeds which people are proven to only absorb about 75% of the calories (part of the "calories out" part of the CICO equation). He also drinks straight oil at times, which can also go right through you (try it).
5. He gained in the beginning, lost a bunch of weight when he got sick, was gaining again after he was over being sick and then mysteriously lost more than two pounds right before the end. Nope, nothing fishy here at all.
All in all, this little "experiment" looks like a publicity stunt to pull in gullible people to try to sell them his keto drinks and keto coaching. If you are impressed by that, you appear to be in his target audience.
Get back to me when he replicates his experiment under scientific scrutiny in a metabolic ward.
Footnote: by all accounts, he was jacked before jumping on the keto bandwagon, so you might be disappointed if you think low carb is going to make you look like him.