I'm going to say it:
Things can feel totally fair, yet still be completely unfun.
I know, it's hard to believe. However I really wouldn't find playing pick up basketball with the world's best professional players as fun as, you know... playing with people at my level. Sure, playing with the highly trained, extremely athletic, and far far taller players means that every shot I miss is /my/ fault. Afterall, I could be taller. (I joke, i kid.) I could have better reflexes. (I joke, I kid... wait, that is relevant to Videogames.) I could send my wife to Europe for four months, and spend all that time turning myself into a honed, yet unemployed and divorced, basketball playing machine. (I joke, I kid... wait... again that /is/ relevant to videogames.)
And I think this is what he or she is saying: it doesn't /matter/ if, in theory, I could practice several hundred hours to finally hone my personal playing skills. It doesn't matter if some people immediately fly through the game and declare it fair, as if this should make it fun for those of us who slog along. Sometimes it still isn't fun to repeat something over and over.