I think people need to read Bridger's posts properly.
When he says "I am struggling to understand" he means, "I have moderate learning difficulties and I am a bit slow so please would someone explain this to me in very very very simple terms"
You seem to think that the phrase "I am struggling to understand" means "I am a genius, you are all morons and what you are proposing makes no sense so you are even greater idiots than I originally thought.". That is most definitely not what he intends.
In that light I will explain to Bridger my understanding of what the potential benefits to casters of attuning rods are. Certain fights require pulse DPS, generally towards the end with the start being fairly gentle. I do not faff around with bags but in preparation I put rod in main inventory slot before fight gets hectic. Just before hectic bit I insta click rod and nuke the shit off mob. If that is incorrect please someone explain the true facts.
Please for the future read Bridger's post properly and please Bridger, for the future, make your requests for enlightenment a little clearer as they do sound like moaning at times.