Do you think he arrived at this policy decision on his own volition, void of any external pressure?
I think that he probably arrived at it based upon a whackton of information and guidance from his administration, which in turn is trying to manage an absolutely impossible situation in which large portions of the American population directly represent the populace involved in one side of the conflict or the other and passionately believe that the other side is the one doing the illegal murdering, while also contending with decades of direct and indirect US government and corporate involvement in the whole situation.
I also think that people squealing about Biden being guilty of genocide are operating at a grade 10 level of political reason and awareness in which everything is black and white, and that they should probably exercise a little more adult reasoning. The expectation or even desire that a government would operate on such a basic level of "side A good, side B bad, support side A" is to be charitable incredibly naive. I suspect the Venn diagram of those people and the "all parties are the same" people has a scarily large overlap and the massive awakening that they're flirting with in November seems to be eluding them. The next Trump administration isn't going to be anything like the first one and I don't mean that in a positive way.