I do not accept that there were no editors, that there is no way to render $(diff -u) in those editors, and that there were no encrypted chat protocols available in the year 2000 (which is the frame of reference in the "17 year history" in that same section)
I'm aware that I am just digging a deeper karma hole for myself, but I stand by what I said: I'm glad it works for them, and I'm glad I don't have to use a hand rolled editor to send around hand rolled diffs via a hand rolled Tk chat client via a hand rolled protocol