Small STW rant, public missions

So yesterday I did the power level 160 ride the lighting mission on public, I was matched with 2 power level 141's and a power level 138. I was power level 139 if anyone's wondering, anyway I want to get something clear here to everyone. You don't need to build to contribute to the mission, as long as you get high combat from killing you should be good. Unfortunately the 2 power level 141's didn't see it that way, as soon as they started building they said "I'm going to let everyone on the stw reddit know you're a leech for just sitting there and not helping with the building". I responded back with, I don't have to do anything UNTIL the mission starts. We continued to argue but I know I was right, as long as you kill husks and get a lot of combat then you're not a leech and that's exactly what happened. I ended off with 0 building but over 8,000 combat mainly from using the minigun, airstrike, hover turrets, and the pragmatic discharger. I will say this again building is optional, but if you contribute to the mission and kill husks then you're good.