As pointed out elsewhere, the post is from 1999. You're effectively asking the author to, apart from creating the content, to also maintain it over the years to

As pointed out elsewhere, the post is from 1999. You're effectively asking the author to, apart from creating the content, to also maintain it over the years to someone else's arbitrary satisfaction. I'm not sure if that's fair. The author likely has other project's they're working on, and maintaining the look of something they wrote 18 years ago isn't a priority. Consider what would have happened if they had just published a book. Likely the book would be out of print and no longer available. This is definitely a step up from that. If this is something that you truly care about, you may want to reach out to the author and offer to provide a maintenane update on your own. That said, be prepared for the author to perhaps consider even the little time it would take coordinating with you and performing any updates not worth their time. Then again, they may welcome your interest and willingness to help.