I just meant that the NNC does NOT say "put the airplane in trim before using the cutout switch".
I think that, without having been explained the importance and impact of each step, there is a (bad) chance that the crew executes the procedure mecanically.
I read between the lines of the ET302 report that the crew was totally ignorant that the aerodynamic forces would prevent them from using the manual trim.
Nowhere in the official documents provided to the pilots, is it stated that :
"switching the cutout switch to off is a NO NO while the airplane is strongly out of trim because you will be unable to use the manual trim" !!