As long as it's just one person, I imagine it's not worth the time to address. If half of the top 10 looked like that, though, they'd probably do something.

Undisciplined

Gaming Stacker News is Self-Defeating in the Long-Run

Regardless what the algo is there is always going to be some risk of people trying to game the system. Agree overall the reward system is solid but agreed sometimes it produces some head scratching results like a person with one comment and a few zaps being 5th for the day. 