Personally I think thorn is OK now, but I can see why it annoys people. For full disclosure, in year 1 I used thorn all the way through its dominant period, but I dismantled mine at the start of year 2 and have not used it since. I think the reason I think it is OK is that in year 1, when for a time it was more widespread than now, and felt more lethal, I became used to being hit by it and immediately disengaging to avoid a second shot (potentially lethal with 2 head shots). I still do that so it is quite rare for me to be hit 3 times now. If I had come to the game in year 2, when most hand cannons feel weak, and thorn itself is nowhere near as commonly used, I might want a nerf. It is a top tier gun in spite of not having a year 2 version.