So in this situation what the team learned is that the new developer isn't confident making the change and that if they pick up the task they should expect to h

So in this situation what the team learned is that the new developer isn't confident making the change and that if they pick up the task they should expect to help them get up to speed. This outcome is preferable to someone else estimating the task from on high and handing it over to someone who then spins their wheels and feels pressured to do it in an unrealistic amount of time. It's about visibility. It's also an opportunity to clarify what is expected-often different estimates come down to different interpretations of what the story is asking for!