Originally Posted by FUNiOP
And he just beats everyone immediately anyway... What was even the point of having him take the Exam at this point if it's entirely inconsequential? And it kinda takes away from the initial weight of him having failed the first time, although so much has happened since then that it's not really a factor anymore. Obviously he had to officially become a Hunter eventually, but I would've much rather they given him another real Exam, rather than just randomly sticking it in the middle of another arc and having it be completely pointless.
It served two purposes for me: 1) comedy, and 2) showing just how huge a deal the mastery of nen is. A skilled nen user in a sea of novices who have never heard of nen and who don't have "Protagonist Armor" is like pitting the World Heavyweight Champion in the ring against a bunch of tired toddlers. See for example what a joke it was for Hisoka and Izumi to pass, when they didn't have to deal with plot-significant characters.
The show has stressed up to this point that the Hunter exam is a bare minimum prerequisite to even start
learning true strength. It's not an end in and of itself for any serious fighter. So I don't think it's even possible that they could have constructed a Hunter exam that wasn't completely laughable for Killua.