Some Ulama are of the view that stunning animals before slaughtering them is permissible because unconsciousness relieves them of the pain of slitting

Answer

In fact, this argument is tantamount to kufr. These deviate, modernist, fussaaq 'scholars' of these times seek to supersede Allah Ta'ala Who has prohibited infliction of injury to animals prior to slaughter. They desire to teach Allah Ta'ala a lesson – Nauthubillaah! They imply that Allah Ta'ala has not endowed the Ummah with a perfect system of slaughter hence the need to improve on it with the brutal methods of the kuffaar. If any type of pre-slaughter act or infliction of injury was beneficial or which could enhance the slaughtering process, then the Shariah of Allah Ta'ala would not have instituted a blanket ban of pre-slaughter injury. The total prohibition of pre-slaughter infliction of injury implies that the Islamic system cannot be improved. If there was any such possibility, there would not have been this divine prohibition. The issue would have been left open or undetermined for the operation of the Shariah's process of Qiyaas. The 'scholars' of deviation who condone and promote the methods of the kuffaar are all victims of western influences and other worldly considerations. They are not guided by the Deen.