Just because the current MOD can't envisage a future need for a use of some particular form of warfare is not a good reason to discount it.
We can’t afford the kit for the roles we are currently tasked with, without worrying about those we aren’t.
I too have nostalgia for what the Cold War UK forces were capable of, even into the early 2000s. But the army and the RAF are both far smaller with numerous shortfalls and “capability holidays” which need solving before worrying about anything else.