Note that here DIY means designing the chassis, the drive loader mechanism, PCBs for backplate, power distribution (including crimping dozens of power cables), modding PCIe cards to fit.
It's not a boring "I bought a Chia mining server and inserted lots of hard drives" build.
I would if I could but like I said, sometimes watching a video isn't an option. The move in some areas to publishing everything as a video instead of writing a proper article is problematic for multiple reasons. I am glad that most things on HN are print and much more discoverable and consumable in all situations.