Answer: Young people today advocate for is people that they feel they can relate to.
Explanation:
The definition of advocate is publicly recommend or support. I think that young kids would advocate (publicly recommend or support) people that they can relate to because they feel welcome, and it can make them feel related to. Young kids like to feel welcome, and alike to their piers, and social media stars that are just like them might make them feel good and they will support them.
Feel free to put this in different words I am just giving you an idea :)