I'm not having a go at the club, but duty of care from 20 years to now would be different. Small hand fractures usually heal in 3 weeks (slightly bigger ones take 6 weeks so obviously can't play through those), so I don't see the need to risk him for insignificant games. Did Braith say if it was a finals game or a regular season game?
Potentially maybe Galvin injured his hand before he got suspended so club felt the 4 weeks of rest was enough? As I said, usually, players' injuries are released on club's websites on a regular basis but it's usually when they have taken time off.