ASCII art is a visually interesting abstraction that has a very different vibe compared to pixel art. It can feel a little random and takes more mental energy to make sense of the character jumble. This particular piece features the PETSCII character set designed back in 1963.
You really have to see the animation to experience this piece. There are portals opening up and spitting out strings of characters that get swallowed up by neighboring portals. The chaos of networking is fascinating.