To add a little bit of context, Freddy and the rest of Billy's foster siblings are gifted a fraction of Shazam's power at the end of the first movie, and like Billy, they transform into adult-shaped-children while harnessing their abilities. In "Shazam! Fury of the Gods," Freddy names his super identity Captain Every-Power (Adam Brody). Unlike Kid-Billy and Super-Billy, Captain Every-Power actually looks like an adult variant of his younger, regular form.
That's not all. Unlike the Shazam disparity, Freddy and Captain Every-Power share a singular, hyperactive personality. When one aspect shifts to the other, there's no disconnect between them. It's obviously the same character. Freddy's nerves are diminished by the confidence that well-fitted spandex provides but the emotional core is unchanged. While Grazer gets notably more screen time than Brody, the pair shift often enough to make this unity apparent.
Grazer gets more screen time than Asher Angel, too. As Billy, Angel gets maybe three minutes to impress his abandonment issues on the audience before Levi takes over. The script tries to prove that Levi's Billy is still concerned about his foster family falling apart, but it doesn't land. He's far more impassioned about his Wonder Woman dream (it's a dumb subplot, don't ask). In comparison, Grazer's around so much that he gets a romance subplot.
More interesting still, Grazer's screen time is comparable to Levi's own. The movie never really sits with the titular hero longer than it takes to punch a dragon or reference "Fast & Furious." Conversely, Freddy is permitted to stew in his problems and then face them in a meaningful, substantiative way. Is he sometimes a cheesy, unoriginal twerp? Sure! But Grazer wears it well which, in this very specific situation, is meant to be a compliment.
