That someone thinks they can personally "fix search" in a few months at a multi-billion dollar social network that just fired half its engineering staff, however, does.
The GTA fix shows humility, literally the first sentence of the "recon" section is "First I wanted to check if someone had already solved this problem". Geohot wasn't interested in if anyone had tried and failed to "solve search", or why it might be a difficult problem. He assumed that Twitter were a bunch of idiots.
The whole approach of the GTA fix author is curious and humble. Very low ego.
That someone isn't as intelligent as they think they are doesn't place an upper bound on their intelligence.