Do Most Readers Only Read Two Paragraphs of a Post?

Here’s an interesting apparent fact I read recently for all my readers. Apparently most blog readers (around 90%) only read about two paragraphs in a regular post whether they are interested in the topic or not. I found this interesting as most of my posts on my blogs are well and truly more than that.

If this is true, does that mean bloggers should be designing our posts for the people who just skim read posts unless of course they are the unusual ones like myself who actually read peoples posts fully? By the online survey it read that most people will skim, pause at images, then read around them, then skim to the end picking up keywords. Should I be writing shorter posts I wonder, except for the fact how do get all my information into two paragraphs. Either way it certainly gives me something to ponder?