MAD
I have also worked with MAcr.
They were frankly excellent.
Excellent at their role.
Their role was specialised. That is the point.
None of them pretended otherwise.
A lot of RN observers are ex aircrewmen. A lot of them are mates of mine. Many have said something along the lines of "I kept sitting alongside this Officer who seemed to have an easier job than me so I thought I'd give it a go"
Most of those good enough to be given the chance pass BOC. Very few of them have quite the same opinion of how easy the Officers job is afterwards.
A good NAV WSO Observer may make it look easy, but that doesn't mean it is.