And, funnily enough, the word processing tool most often used in my office (Dropbox Paper) is slower, less suited to long documents and has fewer features than the first word processor I used. Still, you can't expect your teacher of 30 years ago to foresee "the future is emojis".

People just want different software every few years, because fashion is fickle there's a natural feeling that old stuff is out of date. Slack doesn't provide any real improvement over an IRC server that keeps its logs around, but it's web-based and it has custom emojis, so...