jett two updraft just gives jett 2 dashes and an off angle ability.
The reason the updraft was knocked down to one was because players used 1 to get to a BS angle, and then another to act as a pseudo dash on certain angles, updrafting up and to the left/right after getting a long range pick to make yourself near unhittable. With 1 updraft you have to choose BS angle or Silly escape tool which I honestly think is pretty healthy.
Also, I don't remember which patch that is, but PLEASE, I don't want to return to the Ping bomb and spam from main meta-