Jett strongest ability is her dash, If Riot nerf her dash, she will become useless-trash tier , no one will use her for sure. Nerf her dash=delete her completely
The strongest ability and the only ability is different.
Example: People won't use Reyna if her dismiss gets nerfed, Jett will have the best smoke in the game and updrafts to play with even if they take away dash completely. There are many more ways to play with Jett than any other agent in the game. And her kit is not dash-dependent.