I recall there used to be someone checking baggage claim tags at HNL. But it wasn't like they were checking everyone.
I've been to WA, AK, OR, NV, AZ and some others with my guns and the ONLY place that my gun cases came out on the main baggage area was at HNL. All others, I had to claim them at the airline's baggage customer service counter, where you usually go to claim damage to baggage, lost baggage etc. Seemed pretty typical for every place except HNL.
In terms of airline counter folks checking in baggage, I've also found that HNL's personnel aren't the best with knowing the rules and regulations. That's why I always carry a copy of TSA and the specific airline's policy with me. I've had numerous United agents tell me different things. That I had to have TSA locks. That the gun needed to be disassembled. Then I've also had one that just told me to fill out the card and toss it in the case without even so much as looking at my gun case.