Originally The Wizard thought Billy pure of heart, and worthy of the power. Of course that was a time when Billy literally swapped places with a completely different being calling himself Captain Marvel. In recent canon, The Wizard was searching for thousands of years for someone pure of heart, but ultimately realized no one is 100% pure, but that doesn't mean people are 100% bad either. With Black Adam's return imminent, The Wizard looked deep into Billy's soul and saw great potential, and bestowed the power of the living lighting onto him.
As for other people concerned, is right. Superman fucking flipped out on The Wizard, demanding why he put the weight of such responsibility on someone so young. Of course most JLA members are unaware of Billy's secret. Jay Garrick once thought him a pedo the way Shazam was looking at Star Girl.
Ethan Hill
Depending on the version the wizard was about to expire with no idea if he had the time to find another plus although he finds him wanting he sees great potential. Plus the whole idea is thwt a kid is less suceptable to the sins. Adam's nephew was also chosen in the past and had he not chosen poorly on who to share the power chances are he would be fine.
Oliver Reyes
>Jay Garrick once thought him a pedo the way Shazam was looking at Star Girl. someone post this
Evan Morales
Honestly it sounds like the kinda crap wizards pull all the time
Josiah Hernandez
In the wizards defence he did at least feel bad about putting all that shit on a kid and asked superman to help him
Jose Lewis
Billy later met Star Girl, and told her he couldn't see her anymore. She was devastated, and knew Billy would never reveal his secret because those who did know always treated him different upon learning afterwards. She didn't tell anyone out of respect either.
