If one trawls back through the threads on the topic there are many instances of people say that bonding and "earthing" ae separate things. I agree that the purposes of bonding and earthing are diffent but in almost all cases a set of bonded items are also "earthed" so the overall result is all items are "earthed". That would not create any problems if the "earth" used was true ground. But in any system where the "earth" is connected not to a ground rod but is connected directly to the supply neutral there are hazards created. Not for people inside the equipotential zone provied they have no way to make contact with true ground while also touching anything bonded and/or "earthed" during a period when the neutral is no longer at ground potential. I accept this is an uncommon event but it is an event that the people in the house may have no knowledge of.Do you have an example of that, because that's not what I see people saying.If a number of items are bonded and one of them is also "earthed" then electrically all those items are connected to "earth" but the regulations and electricians who stick to those regulations seem to deny those items are earthed insisting they are only bonded.
That said disconnected neutrals seem to be more frequent recently with metal thefts targeting the neutrals at substations.
If the box was earthed by connection to ground and not "earthed" by connection to the supply neutral then there would be no hazard to people and animals outside the box from touching the box or any service pipes entering the box. There could be a hazard to people or animals if a live to CPC fault inside the box created a voltage gradient around the ground rod to which the box was earthed but awareness of this possible hazard would lead the competent designer to provide a means to detect this situation and then to disconnect the incoming supply.Consider an extreme situation - a room which is inside a metal box ~~Obviously, having a site office which is live would be hazardous to people and animals outside who are touching the 'earth' or other bits of conductive material which is earthed - not to mention the problem of people getting in and out between the two zones. So we earth the box for their benefit.