Is a website that casts doubt on the preservation of the Quran worthy of a refutation and clarification of the truth to people, along with a warning against such websites?

Christians have been accustomed to casting doubt on the authenticity of the Holy Quran by raising flimsy specious arguments. Their book, upon which they rely, is not built on a systematic scientific basis, but rather on misunderstanding and deception. It is recommended to consult the book "Refutation of Tony Boldrojovak and His Doubts About the Holy Quran and the Great Prophet" by Sheikh Abdur-Rahman Abdul-Khaliq. A Muslim should not visit deviant Christian websites unless they are specialists capable of refuting their specious arguments.