And if the diagrams had been ASCII art diagrams (eg https://twitter.com/thorstenball/status/1498541884796542977 ), OP could fix the typo in the diagram with a keystroke.
On the serious side, ASCII art diagrams are splendid and I very often use them myself, though they can get quite complex and thus messy to maintain. There comes a certain point where they lose their simplicity, sadly.