Fazl-ur-Rehman is not an Aalim or religious scholar. His father Mufti Mehmud was a religious scholar but since he joined politics he lost his credibility. His son also has no credibility as a religious scholar. True religious scholars are never eager to gain power or enter politics (though it cannot be said that they should be barred from entering politics). They just act as spiritual guides or mentors for other people.
At least, we are clear that we can easily do without people like Fazl-ur-Rehman who are destroying the image of Islam in Pakistan with their games in political arena.