It is important to highlight the continuity of revelation not only because the Quran itself does this. By making Islam appear exclusive, extremists lend credence to the thesis of Huntington that a “clash” of civilisations is taking place. In that way, extremists make the “clash” more probable and thus play right into the hands of the enemies of Muslims.
Islam is not an adversary of the previous revelations. The “clash” is not between various revelations. “Clashes” typically take place over material assets for example resources.
[Disclaimer: Readers are advised to check the veracity of the views expressed in this post for themselves. If any reader finds an error in this post, kindly inform me].