In this instance I am serious, yes.
Boston Marathon, organized event, qualify, bla bla, ok that's challenging even though thousands of people are doing it.
But Mount Fuji...
300,000 people climbed it in 2009. That's not exactly an amount that is exclusive enough to exclude people that aren't in top fitness. Also, if the kind of people that buy a 100 yen rain cover can climb it, that also speaks to how challenging it isn't. There are no technical sections, no need for special equipment, belaying, crevasses, etc. It's a hike, simple as that.