They're doing it because voters in Michigan and to a lesser extent in other states are refusing to vote for Biden. This has very little to do with preventing Palestinian deaths.
The reason we don't build and maintain cities via airlift is because it's very expensive and very inefficient. The US should demand Israel allows truck transport in and out of Gaza.
The US is the worlds only remaining superpower. Biden picks up the phone calls Netanyahu and says we are sending in trucks. You will not impede them, or we will set your economy on fire. He hangs up the phone and the trucks begin to roll. It's that simple.
Shouldn't be difficult to understand. If the main concern was saving Palestinian lives, the first thing to do would be stop providing bombs to Israel. You'll notice that's not even on the table.
The problem is that by the time they build it half of Gaza will be dead. This isn't like the Bengali famine or the Holodomor where food just went down, these people aren't getting food at all. I think it should be obvious that the progress from infants to adults dying will be a lot faster.
And honestly this pier is absolutely unnecessary. Israel can simply open one of the north border crossings and allow humanitarian aid from there and allow more humanitarian aid.
Instead they are trying to discredit and defund the only agency on ground having the capacity to deliver this humanitarian aid inside Gaza (UNRWA).