Hey, no you're wrong. Kindly open the linked research paper. NEAT is non-exercise physical activity OR spontaneous physical activity throughout the day as the paper itself calls it.
I agree that digestion and metabolism are HUGE chunks of it, BUT as the paper itself asserts - "Non-exercise activity thermogenesis varies widely in a population and by up to 2000 kilocalories . These differences are related to complex interactions of environmental and biological factors, influenced by people’s different occupations and leisure-time activities, as well as molecular and individual genetic factors."
So, agreed genetic matter, but so does physical activity. And any physical activity you do outside of your regular workouts comes under NEAT itself.
Yes, it is important to work on both sides of the equation. I totally agree. But this is still an avenue of increasing your TDEE that most don't tap into.
Bringing this into the light was the intent of the article