I was taught that the title and gist of the article had to be explained/given in the first paragraph. And all that followed was mere expansion and detail.
Suspense required technique.
Not so today.
I suspect it comes from contracts between writer and publisher for a minimum number of words.
And it also might come from the lack of editors at online publishers.
Editors found out some time ago that readers were basically just scanning the headlines and reading the ledes. You know, kinda like what happens on FR. ;)