I loved, LOVED reading paper manuals, the thicker the better. I would be less salty about them going away if the digital versions were just as thorough, creative, and well-designed as the best paper manuals, considering they have basically unlimited space to work with. But now they're mostly the equivalent of a pamphlet insert, regardless. Nobody can be bothered to put any effort into them anymore, paper or digital.
A great manual can set the tone for the game you're about to play, with lore, artwork, beginning tips and strategies, enemy descriptions, etc. The very best ones were "in-universe", i.e. in the form of a journal or survivor's guide, or supplemental information from your dad's Grail diary, and so on. There's no reason that creativity can't be put into a pdf except no one wants to.
Edit: And yes, if you find three-hour tutorials annoying then you also miss manuals whether you realized it or not.