I can confirm that mod can remove the 1 wound filter.
This is the reason I started modding Darktide. If I could choose 1 Mod, it would be to remove the absurdly stupid filter you get out at when playing at 1 wound. I don’t know if it’s to reinforce to the player that they are almost dead, or supposed to be a debuff, but I don’t want to play the game in such an ugly state.
Do yourself a favor and at least browse through the QoL mods, they may save your sanity.
Many default features are a real strain to the eyes and ears, mods curtail that pain significantly. I even wrote a couple of small(ish) ones myself to fill in some gaps!
P.S. Some strains are so severe that they the enter accessibility and health domain and there is still a lot to do, like a global transparency/opacity slider for visual effects and drastic anti-strobe reductions.