It's mostly appetite suppressing. Affects the perception of hunger and the brain/reward function of eating, which must also be part of what also helps for drug and alcohol addiction.
It IME doesn't act like an anti-depressant/SSRI which can affect your enthusiasm/desire for your job.
There is a fairly large chasm between a small team and a Shopify, AirBnB, or Udacity. These companies have dozens-if-not-hundreds of developers piling on complexity.
These companies don't necessarily feel the pain of building on somebody else's sand on day 1 or day 100, but on day 1000. This is what AirBnB and Udacity ultimately discovered.