Misleading? Can anyone Debunk? Keto Metabolic Advantage or Diet Adherence by Vegan Gains - Richard Burgess

Can someone debunk this? https://youtu.be/_rme49ObgNg I could have sworn I've seen this study before and people mentioned it was junk, but to refute the idea higher blood insulin levels won't contribute to weight gain seems to go againt what I've heard. Maybe Im missing something?