I am more scared how they influence on professional athletes. For example, I am a MMA fan. After such boxing exhibition fights, many ufc fighters started to ask for a greater pay cheque for their fights. They refuse to fight if they wont be paid hundred thounsands, while previously a solid fighter get 20-50k for the fight. Instead if dreaming of becoming a champ, they dream to fight this clowns. One fight against a clown brings them same money they would earn in a couple of years. If the UFC management agrees to pay their fighters more, that would mean they would have to find that money somewhere? Where can they be found? In a greater ticket and ppv price for example.
Money is really the main purpose why boxers would risk their life or their health.
We can't blame it on the organizers of the exhibition fight as they are also running their business, it's just that they are so smart in promoting their fight and the fans are attracted with it. Without the fans, exhibition fights will not succeed, so the real fights should also try to improve their marketing so they'll not left behind in the competition, and accept that exhibition fights are already a norm in the sport now.