I'm surprised this article made it this high up on hacker news - it seems really superficial and behind on latest research, I'm always skeptical when everything

I'm surprised this article made it this high up on hacker news - it seems really superficial and behind on latest research, I'm always skeptical when everything is blamed on dopamine withdrawal - isn't gut bacteria meant to play a big part in causing cravings? And ketones perhaps? I'm no expert in this stuff though, so maybe it is all just about dopamine withdrawal?