Why is thst?
Because we needed them for blockades?
They were designed for that. If you design something for a specific purpose it's inefficiënt to give it capabilities it's not supposed to need.
Of course in this case they are what we have, and operating them differently is just a possibility.
That said, they may not have the fire control range at that resolution to fire on incoming missiles before they hit. In which case they're better left behind.
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