The Dutch media world, former colleagues, and politicians are expressing deep sorrow following the passing of presenter Koos Postema at the age of 93. Known as the "national schoolmaster," Postema had a significant connection to Rotterdam, which played an important role in his career. His death has prompted widespread grief and tributes from various sectors, highlighting his impact on broadcasting and public life. The article mentions his age and the location of Rotterdam as significant elements in his legacy.