Nah, here's what "they" are thinking.
You maintain 4 SLBMs and 2 big carriers to pretend you're just like America only smaller and more polite, you buy lots of drones to kill people who wear tea towels and tend goats 3,000 miles away while the ones who live 30 miles away furtively plot your destruction, and you maintain one squadron of ridiculously expensive Typhoons to fly formation with Russian Bears 50 miles from Blackpool with each QRA aircraft carrying 20% of the RAF's entire war reserve of air-to-air missiles so that the Daily Mail can post photos of them with the caption "RAF Fends Off Russian Intruder".
The army basically becomes the SAS plus a few extra men in hairy hats who "guard" HRH. There's your future armed forces.
PS - anyone still remember Front Line First ?