The rest of the world knows that Ukraine Government (such that it is) has declared that EVERY able-bodied male is to be conscripted. If a car attempts to leave encircled areas, men are removed and sent to army camps. That’s ALSO a main reason for the great number of refugees. They fear their own government.
The world also knows that some groups in Ukraine are not letting civilians leave cities, because human shields are the only defense they have left.
Is Zelensky responsible? At this point, probably not. He probably has little control over groups like the Azov brigades
Of course he’s responsible, because he doesn’t have the courage to demand they stop.