The problem with arguing/advocating on behalf of others is that you can arrive at a state that no one actually wants. IE a group of friends wants to go to dinn

The problem with arguing/advocating on behalf of others is that you can arrive at a state that no one actually wants. IE a group of friends wants to go to dinner, one suggests tacos even though they dislike tacos because they think that will make the group happy. Everyone agrees even though they hate tacos because they don't want to hurt the feelings of the suggestor. This frequently leads to suboptimal outcomes.