Take the first one I came to "The Simple Truth".

I agree that "The Simple Truth" is long and meandering. It would definitely benefit from being supplemented with a summary containing just the core claims and arguments, with all of the characters and satire stripped away.

But that article is not part of the sequences. It was written before Eliezer started blogging at Overcoming Bias (the blog from which LW branched off)*. It certainly isn't typical of the sequence posts. Almost none of them (if any) are anywhere close to that long.

*At least, I believe that this is so. Eliezer already mentions it in his third OB post.