WEBF,
Can't 'who' read?
"In an ideal world, of course you'd retain carriers and SHar. It's a capability.
But this isn't an ideal world and tough choices have to be made as to which capabilities have to be retained and which ones are less likely to be required, and which can therefore be (reluctantly) jettisoned."
There are alternative ways of providing the capabilities it provides. There are other higher priorities.