Actually, the failure comes in not understanding the nature of passions.
God is not subject to passions, because God is always in control of passions.
God's passions are always controlled by His other attributes, so they respond accordingly.
A passionless God would be a loveless God, which is the opposite of what the Scripture states God is.
Passion is a problem in man because he allows sinful thoughts to control them.
But when the Holy Spirit controls the man, then the passions that are produced are Divine Like, Love, Joy, Peace, Longsuffering, gentleness goodness, meekness, faith, temperance.
Immutability does not move that God is either immovable or unfeeling, only that He never contradicts or violates any of His perfect attributes.
Thus, God's feelings are always perfect as well.
A God without passion (feeling) is not the God of the Bible.
A passionless God would be a loveless God, which is the opposite of what the Scripture states God is.
I think it more accurate to say God is love according to the scriptures. If we say God sometimes loves and sometimes hates, we don't have an unchanging God which would violate other scriptures specifically and also those attesting to God's perfection and infiniteness.
Immutability does not [mean] that God is either immovable or unfeeling, only that He never contradicts or violates any of His perfect attributes.
Immutable means unchanging and incapable of being changed. Unless God is always angry/pleased, loving/hating, etc. all at the same time, how do see an unchanging God having these differing emotions? Particularly when He is outside time and change?
I not sure what you mean by the phrase: “God’s passions are always controlled by His other attributes, so they respond accordingly.”
Could you elaborate please?