Again, I said "smooth" animation. Yes, it's kind of obvious that rendering movement is possible in the terminal as long as it can update the screen fast enough,

Again, I said "smooth" animation. Yes, it's kind of obvious that rendering movement is possible in the terminal as long as it can update the screen fast enough, but it feels pretty laggy at lower speeds because of the lack in precision. When people implement animations on UI elements they do it because it feels fluid, that's why terminal text editors aren't known to have smooth scrolling for example.