Why? It will encourage all baptized men to realize that training is needed in order for them to share the workload.
لٰكِنَّ ٱلْمَعْلُومَاتِ ٱلْوَارِدَةَ فِيهِمَا يَجِبُ أَنْ تَهُمَّ كُلَّ أَفْرَادِ ٱلْجَمَاعَةِ .‏