Why was derringers nerfed?

[DyssalC]

At present a single styptic patch heals 200 brute damage, if Convair's figures are accurate. High levels of brute and burn damage, short of triggering instant death, are very easily healed by anyone carrying a medkit. With brute/burn so ephemeral, in order to be effective a derringer needs to guarantee a kill. If a traitor wants to spend 2TC for a shot at a certain, nearly quiet kill, that sounds fine to me. Permitting the victim the chance to survive even after a derringer is successfully employed breaks the purpose of the item.

I don't quite believe styptic patches do that, but things change frequently and that might actually be a thing now.

However, if that's the case, the problem isn't the Derringer not being powerful enough, it's the patch being too powerful.