I was joking, definitely don’t write them to install an editor that’s obsolete.

sed and grep (both inspired by ed) to do most of what ed does in a modern way, and ed was only useful over teletype when it was slow/expensive to render a scrollable field.

All modern TTYs support scroll regions, and with sed it just doesn’t make sense to use ed anymore.

ed as the standard editor is mostly a meme based on this page https://wiki.c2.com/?EdIsTheStandardTextEditor