TL;DR: the one entry implemented a subleq machine. Google it - it’s a One Instruction Set Computer (OISC). This made me smile. But it also raised a question: when were OISC’s first conceived? Would Apollo and computers of that era have benefitted from this insight?

that entry won not because it "just" implemented subleq. Dude also made LLVM backend for it, drivers, set up full-on compiler and successfully did compile-and-run for tons of various programs

Given the Mandelbrot program is 450k probably not.