Their retrograde vision helped greatly to develop some obnoxious ideologies, and as a real contributing factor it led to what we know today: Islamist terrorism, intolerance, hatred and violence, everything here comes from those obscurantist Wahhabi/Salafi ideologies. Because Wahhabism is truly the fountainhead of Islamist terrorism.
Not really suprising to see that the historical Al Qaeda leader, Usama Bin Laden came from a very important Arab family supporting the Al Saud.
^Implying that the Saudis invented a new type of religion. Complete and utter misinformation.
Most sane scholars and professors of history and "Islamist terrorism" know that the modern al-Qaeda and ISIL are not born out of Wahhabism. Osama Bin Laden wasn't extreme before he left Saudi Arabia.
No, al-Qaeda and ISIL are actually born out of the Muslim Brotherhood movement in Egypt. They are Marxist Leninist Socialist revolutionaries who believe that the "rectification of the Muslim nation" will only come about by a "Muslim-wide revolution against all the Western puppet governments of the Islamic world". They are Sufi Ashari in origin, and not Salafi.