Worth noting that Computer Modern, the typeface that is characteristic of TeX, was never designed to be used for reading on a computer screen. It couldn't have been, because it was designed in 1986. It's intended to be used on the printed page. And regardless of what people think of its legibility in print, I don't think it's a hot take to say that it's kind of hard to read on a screen. Too thin and light for my liking.
Computer Modern is actually a family of fonts, generated using Metafont, free software also created by Donald Knuth (who made TeX). There are thicker variants, and you can generate more at will.
I still think it is one of the most elegant font out there, although I probably wouldn't recommend using it on a webpage.
You wouldn't be using Computer Modern for reading on a Commodore 64 or Amiga 1000 of the era. The resolution of the displays was just too low, on OSes designed for bitmap fonts with no antialiasing or subpixel rendering. Here's the sort of font you'd be looking at, and their primitiveness is not because their designers liked the retro aesthetic:
