It mostly illustrates the trap that captures many new game developers. The existing game engines are too difficult so I will make new one, and then somehow they

It mostly illustrates the trap that captures many new game developers. The existing game engines are too difficult so I will make new one, and then somehow they spend all the time working on technical side while the actual gameplay never realises. In this specific case I think the main goal was to show how Rust is superior tool for gamedev :D