Has there actually been any empirical proof that betting markets yield better predictions though? From what I read, it doesn't seem so, seems that people still

Has there actually been any empirical proof that betting markets yield better predictions though? From what I read, it doesn't seem so, seems that people still aren't sure if they offer better predictions or not than alternatives, and since it isn't really obvious if they do or don't, it seems ideological if you believe they do or don't and therefore support them or not. Does anyone know if things have changed on that front?