I didn't recommend Attia for his motivating power, but I find him a measured and credible judge on these matters. He knows all the biochem around these issues deeply, he knows how to interpret research, he knows the "traditional" medical story, and he sees actual patients, which is a powerful blend.

I'm not sure what "mainstream" means exactly, but PA was pushing the Overton window in this field long before normal people had even heard the term "ketosis." If it sounds mainstream it's maybe because the mainstream has absorbed a lot of wisdom, and he was part of that larger evolution.

Anyway, I'm glad you found things that have been helpful. Eating a bunch less sugar is something literally every orthodoxy agrees on.