No argument that there aren't new things out there, but the articles linked aren't just "cookbooks." Apparently you're dismissing the whole deal just because of the date on one link. RTFM and let us know what you think is wrong with one or more of the articles if you're trying to meet the same goals now.
There is considerable discussion of what's traded off, and why, with links to makers and sellers, and constant references to "check it out for yourself."
The articles generally recommend against anyone just buying the parts list and starting to build. In a couple of cases they do suggest options that would be better, that they couldn't get in time or at the cost they wanted, with suggestions of where you might find the same - or better - in a different local market, and what to do if you can't find specific components in your market.
Not everyone needs, or wants to build the latest and best at everything. Each of the articles discusses what's significant if you have one special requirement and want to build specifically to meet that one need.
Most people who really want to roll their own will want to look at several of the designs, since each one gives some insight into what corners you can cut and things you can add to get a specific single result. You'll likely want a different mix of capabilities than any one of these designs offers.
It's the discussion of what you're trying to do, and why things matter, when you make up your own kit that I found of interest. And the series of articles that started before 2003 are still running now, with updates, in some cases. New "designs" in this series frequently refer back to previous ones, and compare what's changed since publication of the older ones.
Since I have not been, and am not now interested in building my own machine, I don't spend a lot of time looking for the best sources for such info. This one looked good. I offered it to you. If you don't like it, don't use it.