I don't like the uncertainty and random sandbagging that comes when dealing with negative corruption affects.
This could probably be an attempt to lure people to play PVP, since the negative corruption effects do tend to create chaotic situations in places like 5 mask runs, thus slightly mimicking PVP environment.
I'm slowly switching to healing role in BfA, since I don't see myself tolerating this nonsense for another 7 or so months. I can compete with healers wearing zero corruption just fine. Where's DPS need to be able to pump the damage to be able to stay relevant.