Your friend is a brave person, telling you the story and asking for help. Others' abusive behavior should be pointed out; otherwise, negligence will make the issue grow larger. As your friend's age is around 10, it will be better if his family can help. These things should not be tolerated and also should not be kept hidden. There are a lot of people who are coming out strong by pointing it out.
And, thank you for supporting your friend with your words. The best thing a friend can provide is to support and help get him out of the scenario. With your poem, you are already helping his story be shared with others, igniting a light for others to speak up.