Nice debate but back to the first point. The problem, as I see it, comes from the way H&S is being used or abused particularly in liability and litigation. If someone who is not trained to use PFE is injured whilst doing it all hell breaks loose and the first thing you get is letters from the no win, no fee lawyers claiming that the company was negilgent in not training the person to use the PFE, they hadn't had the manual handling training, the process of fighting that particular type of fire had not been Risk Assessed and the assessment had not been made known to the employee. Hence the instruction has to go out if you are not trained, don't use it.
At the end of the day I think that the insurers have a lot to answer for where they pay out for small claims without fighting. The employee looks at it from the angle they can get a holiday out of the claim, the lawyers get their share and the premiums go up.