The paper the article is about [0] has a 3 sentence 32 word introduction. Those 32 words tell describe the mechanism they found, and give you a feeling for how likely it is to apply to humans. 3000 words is a big jump. The first paragraph is 94 words long.

The article has more than that of course - it's a leisurely introduction to the people behind the discovery and the effort they put it. Nothing wrong with that, it's a worthy story in its own right. But when you click on the headline "Why Is the Human Brain So Efficient?" so discover the 32 words answer to the question in the headline is buried in a 3000 word human interest story, you may feel a little cheated.

[0] https://www.cell.com/cell/pdf/S0092-8674(20)30555-9.pdf

There's one paragraph of that. Then a paragraph talking about the lab being in an apartment building, so that there are bedrooms nearby. Then a paragraph grad students describing their work as "thrilling" to the point of not wanting to graduate. (As an ex-grad student, I have to say "Really?")