You're right, it's not all Bidens fault. There are many evil actors in this conflict. But that doesn't mean Bidens hands are clean.
Hes the one supplying all the bombs, going so far as to hide humanitarian reports and circumventing US law so the munitions can keep flowing.
Hes the leader of the nation which is vetoing UN peace agreements.
He is spreading pro-genocide propaganda. Remember when he went on live television to address the nation and said that he saw pictures of 40 beheaded babies? What a horrific thing to lie about.
If the Nuremburg laws would apply to US presidents, then each one of these actions would be legal grounds to convict Joe Biden for war crimes and crimes against humanity.