The major problem with calvinism is that when you take its premise that God is responsible for everything, then God is ultimately the source of all evil.
In fact, terms like “sin”, “disobedience”, or “obedience” become meaningless since all human activity or actions is merely God’s robotic creation “acting” according to His divine blueprint.
Courage, cowardice, even love are meaningless since human being are simply acting out the “plan” designed for them.
Very good points. If you want to hear this taken to the point of ridiculousness, just tune in any day to Harold Camping on Family Radio.