Fanatics and extremists exist regardless of religions. The latter just allows them to control people easier, and islam happens to be particularly good at that.
This is more accurate.
It’s not that “fanatics exist in all religions”, it’s “fanatics exist”, and religions just give them a cover that is depending on society difficult to challenge as in many places, a religion’s influence on society and rules is quite normalized, completely ignoring how ridiculous this influence is.