would those specifically choosing al-’ibaadah al-kawniyyah and excluding al-’ibaadah ash-shar’iyya, be rewarded?
Those will not be rewarded for it, because they are submitting to Allaah willingly or unwillingly. And so man may get sick, turn poor, and lose(s) his beloved ones having no desire whatsoever for this. In fact, he dislikes it. But this is submission to Allaah, the Mighty and Majestic, in the universal (Kawnee) sense.