In my opinion, there is no valid or justified reason. If the report comes out with a finding along the lines of what many expect, there will be yet another reason why your post is extremely valid.
I never allow any unbriefed (read as surprise attack) EFATO below 1000, if anyone does it, they may have grounds to visit a hospital shortly afterwards, with or without an accident.
Maybe there is some CASA requirement or company SOP's that require it, and if so someone qualified to comment might like to.
J