I’ve read the Koran and studied islamic history as I think most people should. It’s full of a lot of twisted, deviant stuff but it is clearly heavily influenced by Christianity and Judaism.
Like every religion however, there is a difference between the ‘holy’ book and the religion. Islam is a pagan practice with judeo-christian elements added in. In the end, it depends on how you define Abrahamic religions. Muslims, along with Mormons believe that they are.
>>but it is clearly heavily influenced by Christianity and Judaism.
The influence is the kind that you would expect if Satan wanted to write an “anti-bible” to weaken and discredit the gospel.