No, that's wrong.
Somebody else burns the same number of calories being active as you do sitting.
The article does not compare the the same individuals performing sitting vs. being active.
It says that members of hunter-gatherer tribes such as the Hadza on average consume as much energy per day as US-Americans sitting on their butt at home. It says the Hadza's bodies have adapted to perform a more exhausting task with less energy expenditure than US-Americans need.
But the same person (being a Hazda or US-American) will still need more energy being active than being inactive.
(Source: Read from "here's what we know so far" in the article.)
This is similar to finding that from N calories, an obese person may only run 1km while a professional marathon runner will run 5km.
Edit:
The Kurzgesagt video refers to the same Hazda people, and states that if you start working out after being sedentary for a while, you burn a lot more calories, until your body eventually adapts: https://youtu.be/lPrjP4A_X4s?feature=shared&t=212
Somebody else burns the same number of calories being active as you do sitting.
The article does not compare the the same individuals performing sitting vs. being active.
It says that members of hunter-gatherer tribes such as the Hadza on average consume as much energy per day as US-Americans sitting on their butt at home. It says the Hadza's bodies have adapted to perform a more exhausting task with less energy expenditure than US-Americans need.
But the same person (being a Hazda or US-American) will still need more energy being active than being inactive.
(Source: Read from "here's what we know so far" in the article.)
This is similar to finding that from N calories, an obese person may only run 1km while a professional marathon runner will run 5km.
Edit:
The Kurzgesagt video refers to the same Hazda people, and states that if you start working out after being sedentary for a while, you burn a lot more calories, until your body eventually adapts: https://youtu.be/lPrjP4A_X4s?feature=shared&t=212