Ken S,
It is perhaps comments like this
My last Ground Run in the RAF I did a VIP during God Slot and because it was on a Royal I had permission to do a low power run.... I had them up at full chat
from earlier in the thread which might suggest some personnel have a slightly cavalier attitude to noise.
Also the fact that the problem has, to some extent, been mitigated by moving the aircraft round to different locations for ground runs would suggest that there had been a lack of thought given to the potential noise impact that a relatively easy measure (bit of extra towing) was able to address.