One thing that it seems to me ought to be blindingly obvious is that if they were only interested in keeping out weapons and not basic necessities, they would simply inspect everything coming into Gaza, confiscate any weapons, and allow food, medicines, and other necessities to enter. They are not doing this. They are preventing anything and everything from entering.

So clearly, the blockade has nothing whatever to do with weapons, and is a form of collective punishment against the people in Gaza. Which is a crime under international law, by the way, and is a deliberate targeting of civilians.