The United States has such a large GDP because 1/3 of it is the private healthcare industry. Another massive chunk is the government throwing tax dollars at a shell company of a shell company of a shell company that moves a government contract for construction around to each other 4 times, all subsequently increasing GDP.
Then maybe they should have just focused on keeping the Rafah crossing open to aid as opposed to building anything. The point is that the entire thing is clearly not meant to be a good use of money, it is clearly graft.
No arguments there. Just saying the construction is probably complicated a bit by the genocide they're complicit in