How would you respond to Dr. Bart Erhman on John 8:1-11 being a later addition?

In John 8:1-11, Jesus forgives the women who was taken in adultery, but critical scholars, such as Dr. Bart Erhman, claim that no early or reliable manuscripts contain John 8:1-11, and that, thus, it was probably a later addition. How would you respond to this claim? I have included quotes from Erhman below: > "The story of the woman caught in adultery is not found in the > earliest and most reliable manuscripts of the Gospel of John, nor in > many of the important versions of the text... It appears to have been > added later, perhaps to fill in a gap in the narrative." (Misquoting Jesus) > > "The story, even though it may have been part of the oral tradition, > is not originally part of the Gospel of John, but rather was added > later by a scribe, perhaps because the story was well known in > Christian tradition and fit well with the themes of the Gospel." (The Orthodox Corruption of Scripture) > > "The story was eventually included in some versions of the Gospel, > likely because it was seen as a powerful teaching of Jesus’ mercy, but > its late inclusion suggests it was not part of the original Gospel." (A Historical Introduction to the Early Christian Writings)