Inconsistency is DJI's middle name.
It seems they forgotten to adjust the delay for 2 other CSC options, they only did the 2 stick in, and out, as it now seems.
But perhaps the other 2 CSC's didn't show up as crash cause in the logs that often. Who knows?
Strange that the delay also works on the ground. It's inconsistent with what they are saying 'changed delay for stopping motors in the air'. It used to be instantly, on the ground and in the air. Going to check that, I never use CSC, only for an emergency, which never happened yet. Maybe they sneaked in a delay with the pervious firmware without telling us.
DJI has a very strong consistency in being inconsistent, they're incredibly stable in that respect.