you learn at something by doing it more, not by doing it less
You can't give someone a grid penalty or a stop and go penalty after you have given them a race ban for the same ****ing thing. Also he is an adult Formula One professional race driver, not a child in a classroom for ****s sake.
that is why a ban is never a good idea in the first place
now if it is done on purpose, it's a different matter, but it's not the case here