I'm an old phart in that I really, really prefer documentation in plain text. At least when included in an archive. If it isn't easily readable using less, it isn't useful. If you want to also include nice, pretty documentation, that's fine.
Yes, I'm a cranky curmudgeon. Why do you ask?
My entry into the world of Linux came in November of 1991 thanks to Erik "Erat" Ratcliffe. He gave me a copy of HJ Lu's boot/root floppies (5.25" floppy floppies). From there I went through MCC Interim, TAMU 2A, Yggdrasil, SLS, Slackware, Red Hat, then Fedora.