On Wednesday, the UN criticized the closing:
The United Nations Humanitarian Coordinator, Mr. James W. Rawley, expressed serious concern regarding the impact of these restrictions on the civilian population. "These measures are resulting in the depletion of stocks of essential supplies, including basic foodstuffs and cooking gas, and undermine the livelihoods and rights of many vulnerable Gazan families”, said Mr. Rawley. “If these restrictions continue, the effect upon the Gaza population will be serious".Notice that the closure did not affect a single Gazan. The stockpiles of goods were somewhat depleted but they were adequate to ensure that Gazans still had their basic needs met as they have been.
Yet the UN itself last week stopped giving food and other services directly to Gazans in response to riots at UNRWA offices and distribution centers. If anyone was engaging in collective punishment, it was UNRWA.
But, hey, criticizing Israel is so much easier than justifying your own hypocrisy.