Good post. I think another issue is the rapidity of postings/high turnover rate. Not only does it take time for the office holder to get up to speed, they will want to conduct a strategic review of the programme and then implement changes - and then move on to their next job - which makes it doubly hard to pin down individual accountability.
I can can think of a number of other programmes out with the Air Environment where process dominates output and that SCS 2s are signing off absurdly expensive projects because they won’t challnge grossly inefficient processes.