While GPU accelerated 3D interfaces (like it in 3D games) is a good idea (at least one could mix data visualization and with controls - the way WebGL guys do it) a terminal emulator does not require any acceleration, leave alone having a Nvidia drivers or Cuda as a dependency.

What a decent terminal emulator should have is standard compliance and decent font rendering (and freetype is good-enough).

Lousy engineering will lead to lousy code, especially when the main objective is to show off (engineering is, obviously, not an objective.) Btw, using Rust is not an engineering.