We don’t know why the shooter tried to shoot Trump. We also know that this will role up his base. And the shooter failed at what he was trying to do.
That doesn’t sound like a hero.
Dude was probably messed up in the head. If we call this attempted assassin a hero, that might inspire copycat crimes of people trying to shoot public figures they disagree with. I know there’s that second amendment and all, but is that really how you want the country to function?