As someone who plays Overwatch regularly this a more than welcome change. I can say I have definitely had my share of Junkrat, Widow and Hanzo throwers and some who even admitted to throwing. It’s really frustrating and console doesn’t have a way or reporting or flagging these people other than manually doing it through Xbox which rarely provides a solution.
Expect these changes along with the Mccree changes to go live on or around June 20th.
Having a second account you play on is fine. New accounts very rapidly adjust to play at the proper skill level.
Doing anything to manipulate your internal MMR or Skill Rating (i.e. Boosting or Throwing) is not fine.
Penalties for boosting and throwing are about to increase dramatically. Please report the behavior (reporting is being worked on for Console but is not ready yet). – Jeff Kaplan