Because the Pope and the US knew that the blockade/embargo should have been lifted a long time ago.
It also provides some information on the embargo that was not previously discussed. Including certain materials that are/were excluded without cause and the "extremely onerous bureaucratic process" that made it difficult to get goods into Gaza and made what little there was extremely expensive. Basically, the Israelis caused the amount of goods shipped into Gaza to drop 75%. An attempt at collective punishment of the entire population.