How do the motivations of Error Sans (destroying timelines) and Fatal Error Sans (erasing corrupted timelines) differ, and why is this difference important?

Error Sans destroys timelines seemingly out of a chaotic impulse, a byproduct of his glitching existence. He doesn't have a clear goal beyond causing destruction. Fatal Error Sans, conversely, *selectively* erases timelines that are fundamentally broken and pose a threat to the multiverse's stability. This distinction is crucial; Error Sans is a problem, while Fatal Error Sans is a solution, albeit a drastic one.