Some people probably dont see anything important about comm aside of being weekly quest.

So if they already did their weekly 5/5 comm thingy, they probably ignore it until next week. And if they are doing the weekly, they probably just click to whoever name come up first.

I got full 3 comm as dps yesterday despite its only levelling DF and i barely do anything (being lazy) since its a lvl 15-20 DG ¯\_(ツ)_/¯