I too am surprised that the controller got a longer sentence than the airport authorities. The controller was only involved in one of the many factors contributing to this accident. The airport authorities were involved in all of the factors by their lack of supervision.
1. Not preventing the Citation crew from departing in conditions they were not qualified to fly in after ariving in those conditions.
2. Not ensuring the airport signs were at least adequate for cat lll operations.
3. Not having installed the ground radar which had been available for some months.
We have all crossed red stop bars but have always queried them with ATC, only to be told they are on for 'test', and NEVER in cat lll conditions. But then the Citation crew were not cat lll qualified were they? Although not crossing red stop bars is pretty basic stuff.