Yeah, it seems almost insulting that the author expects countless people to spend time reading their posts, while they haven't spent a lot of time to edit and streamline it, all with the excuse: "these are just my ramblings".
To paraphrase, I will not excuse such a long letter, for you had more time to write a shorter one.
To paraphrase, I will not excuse such a long letter, for you had more time to write a shorter one.