Webf,
That would be true if the public had voted to scrap the SHar. Unfortunately for your argument, the decision was taken by people who were fully aware of the RN's existence, role, and traditions, and of the SHar's utility, operating costs, and capabilities - including 1SL!
It was a tough decision, but one which reflected the fact that these very senior officers felt that there were other more important priorities, and that the Shar was a cut worth making.