People hearing the story would not, but was it a recent story? The guard should only be doing protection in terms of walking off down the track with red flags and a torch (abandoning the passengers to do as they please) if they cannot speak to the signaller and even then it’s to talk to them by the quickest possible means and then go back to the train. A derailed pacer would have two GSMR radios on board - a European wide standard technical system that doe not just ‘drop out’ day to day and has an emergency function that does the job of protecting trains a hundred times better than a guard or driver could.
The Northern (happily ECS) train that struck a tree on the Newcastle Carlisle line in the last month or two leaving the GSMR disabled at, reportedly, both ends - luckily the driver was able to arrange protection by alternative means but the signaller was unable to participate in the radio call.
The Freightliner that struck a tree near Leamington on New Years Day or tbe 27th Dec last year, luckily before passenger trains had started, which again took out the GSMR and had the (again luckily unharmed) driver running to a signal phone.
The train that killed someone in the East Mids last year where the driver was unable to protect the scene even using the GSMR having gone into a state of severe shock so the guard had to do it.
Those of us who work around the system know it is bloody useful but it's not foolproof.