[GB330033]

You highlighted the impulse portion, but look at the ejecting part. "the mechanism that delivers the final dynamic impulse that ejects the ball from the robot"

That leads me to believe that if the ball is not contained, it is not being ejected, and therefore the mechanism is not a shooter.

Also, a Q&A was already posted for a ramp, though I don't have the link. The response said that as long as gravity was the only force ejecting the balls, then the ramp would not qualify as a shooter.