I read the blog post once and concluded this poor chap was confusing type 1 and type 2 diabetes - because really the first paragraph is silly - that testimonial is classic for type 2 diabetes.
I’m still a bit skeptical this dude actually has true type 1 diabetes, when it fits more likely that it is LADA, latent autoimmune diabetes of adulthood - maybe look it up.
But in any event, everything I could find is that this guy is still using insulin. So that doesn’t really change anything - he’s still insulin dependent - and he “hopes” that it can be reversed. But why? Not based on anything logical I can see. He reduced his insulin requirements - by reducing his dietary carbohydrate intake - well duh that is a mainstay of diabetes management for years - you don’t have to go full blown keto to realize decreasing insulin requirements with lower dietary carbs.
So your example doesn’t even demonstrate your point. And even if it did, your fundamental line of reasoning is flawed - you keep bringing up examples - these people might as well be medical outliers - this has no generalizability and you don’t have any justification to even suspect that their diet had any effect on their health outcomes.
Edit: also please read the comments carefully on “vlads” post - lol he’s been diagnosed type 1 at age 40 - more likely it’s lada. And he’s only been diagnosed 2 months - yeah maybe he still has some functioning islet cells left - look where he is in 2 to 3 years. I appreciate the commenters that basically call him out on his bullshit.