I'm conflicted about the notion that "no one has time to read your article." That says more about dilapidation of reading culture than the fact that length of a text is necessarily bad. I see it happening to me and I don't read something not because it is valueless on its own but because there is simply too much else outside of it drawing on my attention.

If there's more and more pressure to say less, eventually you'll say nothing. If you say everything, nobody will read it unless they have eyes set on your work.

Most people seem to be trained to write an expository piece in a classical model of assert a premise => provide an argument => yield a conclusion. They're not used to putting the conclusion where the premise should be sort of like an abstract.