Fun fact: In the early days, website projects were mostly allocated at the top level of an organisation. As top-level officers used to consume the Web in printouts, the print view was also the default customer view and thus of utter importance.

Also in my experience, the higher you go in an organisation, the greater the chance of finding an older person of great ability with tired eyes and well-masked dyslexia who just wants to print your thing and go through it with a highlighter and a sharpie, and whose PA just used to always do that for them without anyone finding out.

Even now this is not that uncommon; I have worked with an entrepreneur masking significant dyslexia in just the last five years. Printability was just something he needed so he could properly scrutinise.

Print is still an accessibility thing, I think.