>>" but the New Testament was written in Koine Greek—"<<
So his position is based on something they cannot prove but only speculation.
The speculation is all yours and wasn’t found necessary until the lie began in the16th century.
Also from the site which you neglected;
The name Cephas is an anglicized form of the Aramaic Kepha, which means simply “rock.” There would have been no “small rock” to be found in Jesus’ original statement to Peter.
Even well-respected Protestant scholars will agree on this point. Baptist scholar D. A. Carson, warites, in The Expositor’s Bible Commentary:
[T]he underlying Aramaic is in this case unquestionable; and most probably kepha was used in both clauses (”you are kepha” and “on this kepha”), since the word was used both for a name and for a “rock.” The Peshitta (written in Syriac, a language cognate with a dialect of Aramaic) makes no distinction between the words in the two clauses.
Correct; and I don’t think he knows what “exegesis” means. Apparently it wasn’t invented until the 16th century.
News to me.
Hoss