I want you to understand why that counter-Islam article is relying on the wrong information.
Take a look at the bibliography. It shows many of the common sources -- Papias, Ignatius of Antioch, Origen, Eusebius and Irenaeus among others -- that are cited by Christian apologists to prove the traditional Gospel authors. All of these men are well-respected, early Christian leaders who lived decades after the Gospels were written. Many of them hailed from across the ancient world. Irenaeus lived in 4th Century France. Eusebius lived in 3rd Century Palestine.
But that's the
problem. These men, while well-respected, lived well after the time of the Gospels. The claims of traditional authorship had already started before these men were even born! We can't rely on their testaments without examining the content of the actual Gospels. It's like modern investigations, because human witnesses are often wrong. Thus you have to rely on the actual evidence (the Bible) to verify whether these men are making the right claims centuries after the events they describe.
That's where the traditional authorship falls apart - the actual Bible. Why would (for example) Mark, Matthew and Luke have the literal word-for-word contents of each other? The Gospel of Matthew is a word-for-word copy of Mark (the shortest Gospel), with the addition of 1/3rd more source material.
View attachment 67156193
Matthew contains 94% of the word-for-word language of Mark. That exact copy and paste of text takes up 55% of Matthew!
If Matthew was written first, why would Mark delete the other 45% of Matthew's content? Mark doesn't include the Virgin birth, the Sermon on the Mount, the Lord's Prayer and actually
ENDS when the women roll away the tombstone. (
Matthew 16:9-20 was added later.) Did Mark not think that the Lord's Prayer or the Resurrection was important?
No ... that would not make any sense. The only explanation is that Mark was written first, and that Matthew and Luke copied it. So why would Matthew (an Apostle) copy the word-for-word text of Mark (a non-Apostle)?