Shouldn't matter if someone is Force Sensitive or not, The Force affects everyone because its apart of them it doesn't really matter if they can use it or not the only difference between the two is a certain beings can use it.
It honestly still shouldn't matter. There have been plenty of people in Star Wars that have done some pretty terrible things that weren't Force sensitive and weren't touched by Dark Side corruption. Tarkin, Daala, Ghez Hokan, Thracken Sal-Solo, just to name a few examples. At this point, and from most of the lore that can be brought up, it's pretty clear that only Force sensitives can be touched by Dark Side corruption.