I think the video is aimed at reducing the abuse of Watchtower’s shunning program, and not specifically at Watchtower ending it
I'd be interested to hear how you think a video will reduce the abuse without ending it. Perhaps you meant reduce the impact of the shunning program? I would still be interested in hearing how that would happen if it still went on.
"Hey, my parents won't talk to me ... but it's OK now - I found a YouTube video!"
I think reducing the effect would only be through help and support networks (of all kinds) so perhaps the aim of the video is to help enourage people to offer their help?