Chooses Quantity Over Quality
The GM has written a seven-paragraph post to describe a scene. Every paragraph is important and sets out the key themes and tensions of the scene. A GM post is long because the GM has to include something that every player can work with.
THAT GUY tries to match the wordcount by describing his morning routine before he arrives at the scene. The post is complete with little descriptions of what he is wearing, flashbacks to what he did years ago on that fateful night that changed his life, and purple prose tangents about how the sunlight is coming through his window-blinds. Oh, and did he mention that he has auburn hair that tumbles loosely on his shoulders and falls down his back to three quarters of an inch above the tattoo of a butterfly which he doesn't remember getting but which he kinda like because it outlines the scar from that knife-wound which his lover dealt him when they were on safari in Africa hunting a rare Rhinoceros that could shapeshift into an anthropomorphic lion that looked very similar to the cloaked assassin that killed his father for dabbling in Mafia operations ON THAT FATEFUL NIGHT and since then he's been a vegetarian and that's why he makes himself a bowl of fruit and granola and toast with some tea for breakfast and he chews everything very slowly while he reads the paper and then he wonders WHY he always brushes his teeth before eating breakfast because that's pretty stupid once he thinks about it but that's the way he saw his mom always do it and she probably learned it from TV which she turned to, along with the drinking, after her father was killed by an anthropomorphic shapeshifting rhinoceros lion who may still be out there planning to kill him so he better put on his best fighting shirt, y'know that slightly ripped white shirt with blue stripes that is still stained with his father's blood FROM THAT FATEFUL NIGHT.
Take the gun out of your mouth - it's over.
'Long post' does not equal 'better post'. One well crafted sentence or single line of dialogue is worth ten paragraphs of purple prose. Clear, simple writing is never unappreciated.