I have just returned from a seven sector trip:
LHR/MUC/JNB/CPT/GRJ (a regional South African airport at George) /JNB/MUC/LHR.
On the two occasions that I was in transit at MUC, there was no new x-ray or search on boarding, despite having mingled with dozens of people that had started their journey there and local staff.
At no time was I asked to open my carry-on even though it had a jumble of cameras, laptop and other electronics.
On one sector it inadvertently carried an electronic alarm clock with it's battery! But that was not noticed either.
On departure from LHR, the bag contained (again by accident) a pocket device that includes a VERY sharp blade - but is of less than 2" length. When I realised that it had passed unnoticed, I decided to leave it in to see what happened. Another four x-ray sessions also failed to detect it.
I did not notice queues of undue length, given that I was travelling in the busy season.
So business as usual.