that's my impression too, especially after listening to over 2 dozen sermons / teaching seminars on the subject from as many different preachers / teachers. particularly, trying to balance or reconcile predestination & omniscience with free will and/or agency. i think that predominantly, open theism tends toward giving more weight to human will ((for a variety of reasons)), taking for granted a certain autonomy of mankind to influence and bring about present & future events or states of being ((individual salvation being the foremost, in an Arminian sense, though open theism isn't singularly Arminian, it being believed by 'reformed' theologians as well)), and from that standpoint, somewhat axiomatically, seeking a theological understanding of God's will, knowledge and action among men that accommodates this 'free agency'
in that sense it seems more 'human-centric' than 'God-centric' approach to sorting out how God & man & time are related to one another.
the big problem i see in all this is the presumption that God, like us in the way we experience existence, is bound within time. i don't believe this is the case. i believe time itself is a creation of God, not a 'higher order' of metaphysical reality within which God is in any way constrained. i believe that God, if He so willed it, could 'change the past' with equal fidelity that He ordains/foreknows the future. in my mind, i have to believe this, because if it were otherwise, there is something ((time, in this case, in an abstract sense)) which is sovereign over Him: in which case, He is not God, because ((i believe)) an incontrovertible quality of God is that He is God over all things