To bring in the simplicity of God and His unity, we will see that God's sovereign decrees are necessary, not because of any mechanisms within him or constraints from without, but because He is God and doing anything which was not perfect would mean He was not God. Some people want to argue God is not subject to logical coherence, but I don't want to argue that he is, what He is, though, is God.
One can also think of it in the sense of 'being free to make a mistake on purpose'. If you do intentionally it's not a mistake.
Christian freedom has never been about ontological liberty of decisions, or political systems (which may be important in their own right) but about escaping the bondage of Sin. In this sense, God is totally free, as God by His nature does nothing wrong, either morally or practically.
The (political) liberal mentality infests the Boomer Truth Regime, just do your own thing, maaaan.
By the way, my father was older than a Boomer and he knew exactly what I'm talking about. This isn't some problem I have with old people, it's a problem with the state religion (Boomer Truth Regime) of the Global American Empire (GAE). It just happens to be at its most obstinate and institutional among actual Baby Boomers.