"Just to be clear here, we don't "stealth nerf" things and try to hide changes we make.
If things aren't in the patch notes it's because the internal communication broke down at some point. This is something that happens a bit too often for my liking and we're working to improve upon that.
Ideally, it should never happen."
It's probably a good idea for someone to check the impact of this while also wearing the Hard Wired gear set as they intend to nerf that too. It already impacts Shock Trap, Blinder, Fire Turret and Demolisher so it'll likely do for Banshee too.
But they reverted their changes to NPC resistances... and then shafted us elsewhere instead.