Many posts around here claim some science and technology that is frequently unreadable. Some of the time because it may be too complicated for me, some of the time because it is poorly written.
There is nothing wrong with being able to present one's thoughts in a readable manner. I cannot argue if almarg's post was correct, or not, but it was readable.
Now, if instead of equaling decent writing skills with incorrect statements, one could argue about them in similar and coherently written style, it could be beneficial. Otherwise it is just whining "Yo re convincing and therefore you must be wrong because I am right and have never convinced anybody."