I got a NexiGo portable gaming monitor that I’m pretty happy with. It is a 16 inch 2560x1600 display, 144Hz, and supports FreeSync. I got a bidirectional DisplayPort to USB C cable so that I could use it with my desktop for LAN parties and it’s great. It has a built in flip-out kickstand, a folding magnetic cover, OK built in speakers (good enough to game with anyways), and can be powered via a second USB C port with an A to C cable. On a device that supports USB C video output like a laptop or Steam Deck it can run off a single cable but I mostly wanted it for my desktop.
If you read the article, it is indeed full Linux because the 4004 is running a MIPS emulator that provides the necessary memory management features. Pretty much all of the “run Linux on some old chip incapable of running Linux” projects achieve it via emulating a more featured architecture that Linux supports, not by somehow compiling Linux to natively run on a 4 bit, MMU-less architecture.