When we mess up big time, it's tempting to just try and sweep it under the rug. But God's response to sin is far more radical than we often imagine.
Moses doesn't just throw the golden calf away; he annihilates it. He burns it, stamps it, grinds it into dust, and then washes that dust away in a stream.
Radical Destruction
This isn't a passive disposal. It's an active, violent process designed to leave absolutely nothing behind. The goal is complete eradication.
No Remnants
The commentaries highlight this: the point is to leave no 'monument or remembrance' of the sin. God wants sin gone, not just hidden or ignored. He deals with it thoroughly, leaving no trace that could encourage further rebellion.