> He invented modern graphics as a practical problem by himself as the sole researcher
That is a ridiculous exaggeration. Carmack was clever enough to gain ~1 year advantage in performance over his competitors for the Doom engine, using Binary Space Partitioning, which was first applied to 3D graphics in 1969, before he was born. The Quake engine got a significant performance boost from Michael Abrash, who is a specialist in code optimization.
That is a ridiculous exaggeration. Carmack was clever enough to gain ~1 year advantage in performance over his competitors for the Doom engine, using Binary Space Partitioning, which was first applied to 3D graphics in 1969, before he was born. The Quake engine got a significant performance boost from Michael Abrash, who is a specialist in code optimization.