Health and safety gone mad.

Recently at a Tesco regional distribution centre and was told to make sure my cab was locked (which it was) and that I was to stay in the drivers rest room, fair enough, the keys were handed over and a receipt fob given back, as a light hearted query I asked, "if I am in this room and you have my keys what was the idea behind locking my cab?"
"health and safety" came the hackneyed reply, nonplussed I took up my position on a very uncomfortable (as seems to be the rule at all rdc's which would seem to negate the health and safe of the driver, but I digress and will definitely return to the topic of driver's rest rooms at a later date.) plastic/possibly pvc bench to begin watching the next instalment of the new sky offering 'Bulletproof' which incidentally could best describe the furniture on which my ass rests, when the call was made for me to return to my vehicle and 'could I raise the suspension on my trailer?' "but of course" came my helpful reply. Now this set my train of thought racing along, rather faster than my trek back to my vehicle.
I questioned on return to the goods in desk, "would not me making a rather long walk, twice, across a very busy lorry and forklift working area, with lgv (articulated lorry) reversing across my intended path, with both drivers of righthand and lefthand trucks (meaning part of the manoeuvre is done blindly by said ((often foreign)) drivers, would that not constitute more of a health and safety risk to myself than leaving my door unlocked? 🤔 I was met with a blank stare... 😶 Ho hum, is it me? 🤔 🙄