Summary from article's beginning:
The Raspberry Pi Super Computer was originally built for Open World in October 2019. We have 1050 Raspberry Pi 3b+ in four server racks, configured in a big square box reminiscent of a British Police box, popularized in a certain British Television TV series. Fast forward to today, the Pi Cluster, “The Raspberry Pi Super Computer (Pi Cluster),” got sent to e-waste, some parts stripped off it, was dormant for 2 years, and then in May of this year found it’s way to my garage where it got a complete overhaul.
This was also my understanding and I do still not know whether to admire or hate this guy. No just joking, it is definitely admiration 😁