This page has no rocket science - it just indexes the first node added to the thread by a given monk. If you didn't put your etymology on your first sub node then may I encourage you to edit the sub node?
I'm one of those affected by this, uh, bug. :) My first node in that thread is a Re^3, but I did explain my moniker in my first directly reply to the node. I'm pretty certain that this applies to most everyone else who is currently misindexed - so I'd like to propose a very simple heuristic: if it were biased towards picking direct replies over deeper ones it would likely make not a single wrong choice about which nodes to index.
Makeshifts last the longest.