This is just another instance of the long set of Shittification and Shrinkflation happening everywhere, brought about by us holding our collective heads in the sand over the real rate of inflation. I'd bet it's a lot more than the official numbers.
FAAs 3B shortfall in funding is not appearing in the extra cost of running a government. They're "shrinking" or rather "shittifying" the service that the government provides by not hiring enough personnel required.