Hello,
I very rarely use Facebook but whatever. I just checked out someone's Facebook site. The page length is amazing. It never ends. Yet, no one seems to complain about the length of pages on Facebook.
However, as soon as a page is a bit long on Moodle or another LMS, we talk about the scroll of death!
My theory is that people are Facebooking for fun and wasting time. They therefore have no objection to a page being long. In addition, the content consists mainly of photos that require little intellectual effort to look at.
On the contrary, a page on Moodle generally contains information that users have to assimilate, which requires a much greater intellectual effort. So after a few screen scrolls, users get tired and look for a way out. The first solution available to them is to stop reading and leave the page, which they will do with a sense of accomplishment and a light heart if the page is short. If the page is too long, users feel trapped in it, while not being able to see the end of their pain.
One can wonder if only the pages should be short to keep the attention of the users. No doubt the paragraphs should also be short, and perhaps the entire course as well.
But is all this really serious? Students can't read long paragraphs on long pages? Strange generation where everything has to be done quickly, where focusing on one subject is a thing of the past.