Yeah, that's true. Point taken, but still. At least they should consider blessed terrain hazardous. They don't consider poison hazardous any more but non-zombie characters don't walk into anything that's bad for them.
If Blessed terrain hurt Zombie-talent players, that would be bad, because in Act 1, blessed terrain appears automatically under players feet at the end of many combats in the swamp, plus there's a waypoint sitting in blessed water.