Embark devs playtested Arc Raiders too viciously, so they found a system that let them be Care Bears one day and aggressive the next

The problem with playtesting is that it is impossible to predict every last thing any given person may do once a game is out in the wild. It's an imperfect science where you do the best you can in the moment. I imagine a live service game like Arc Raiders to be extra difficult, given how many playstyles need to be accounted for. And based on a recent interview, it sounds like some of the team at Embark took an approach that involved a randomiser determining their own playstyle from day to day to make sure they weren't just playing one way.