"The meandering intro"
Not only the intro. Many bloggers try to write as if they'd writing a story, building suspense and all. For technical writing, don't bury the lede.
This is a pet peeve of mine when there is a news story, opinion piece, case study where they spend like several paragraphs (or much more) telling story like it was a novel when in reality you it about maybe one or two paragraphs explaining what happened to a particular person/couple/family etc. and then get into the facts.
It is a massive turn off for me and I just simply close the window if I find they don't get start getting to the point.
I am much more forgiving if the meandering intro is done by someone that is clearly just someone writing up their own work.
Not just bloggers either. One look at the average YouTube video, and you'd think most people making those things had never heard the word 'brevity' in their life.