You could say that for everything in the game dependent on a dice roll that locks you out of a certain thing. Like you said, it's part of the game. If you fail the persuasion check for Scratch, he just runs away. The consequences for an NPC dying in battle due to a failed dice roll would be meaningless if you could just revive them 5 minutes later. It's just the way the cookie crumbles. Better luck next time.
Now if there was a way to remove save scumming completely, I'd be all for it.
