Why does everyone have such long announcements on Habré?

Question

Habr

When publishing an article, you can trim its beginning anywhere by clicking the "Read More" button. Then there will be a small announcement in the tape.
However, in practice, announcements on Habré are usually LARGE - 3, 4, 5 paragraphs each, usually long. Right now, on the main page of the entire feed, only two materials have short announcements.
Obviously, the volume is increased intentionally.
But what is the trick of the plan?
After all, people mechanically scroll through a lot of letters , and the number of clicks (to read), in theory, only decreases. I know there would be some pretty pictures...