Fukuyama said that Capitalist Democracy was the pinnacle of civilisation.
In the same way Salafi / Wahabbi ideology says that we must as much as possible live like the prophet and his contemporaries. Any innovation is derided as Bida/Heretical.
So its not possible to reform certain laws in response to changing circumstances. Eg: Women can inherit only half of what men do. Now I'm not justifying this but this might have been pragmatic (socially acceptable??) for a time where women were subjugated and men were often the sole breadwinners for the entire family.
However in the 21st century noone can really argue that its relevant. But if anyone tries to reform laws such as these you'll have the Wahabbis and Salafis going ape and branding everyone heretics.
There was a cleric in my part of the country who had a very unorthodox interpretation of the scriptures. He was a brilliant orator and a scholar who could hold his fort against the traditionalists. He began gaining a lot of followers however one day he just disappeared and was never found again.