Only in the "pro" " sport" of American running would the fans have no idea who is competing in one of the most anticipated races of the year.
Phelps and coach talk to media all the time about what they're entering, what their planning is, and it's good for their profile - and the sport.
And Rupp is an unaccompanied scrub compared with Phelps. Keeping entries secret like a drama queen, always scratching events at the last moment? No wonder nobody cares about the sport (who isn't in it themselves). Think about that: the sport has literally no fans who aren't/weren't runners. Meanwhile, arenas are packed for tennis, gymnastics, even swimming.
Honestly, selection of the US women's gymnastics team is more clear to follow, and that involves the personalities of actual teenage girls, not two grown men who act like they are.