why do they boo reville

They are not actually booing Bruce Reville. Instead, fans are loudly chanting his name, "Bruuuuuce," which may sound like booing but is meant as a cheer and a positive affirmation of support. This chant has become a special and enthusiastic part of the fan experience for Reville at games. Some confusion arises because the sound of the chant can be mistaken for booing, but it is not intended as such by the crowd. Reville is a cult hero for the Brisbane Lions, and fans' loud vocal support for him is genuine excitement rather than negativity.