Which, IIRC, is exactly the same FA charge that Bielsa faced, and got a slap on the wrist (from the FA).
I still maintain that the EFL rule change should have nothing to do with how the FA deal with this. Both Bielsa and Eckert "brought the game into disrepute", regardless of what rules the EFL happened to have in place at the time, and that's all the FA should be focusing on.
In my humble opinion of course.