The idea in some people's minds seems to be that even if there is good evidence for the NT, God should have provided more, and that he did not provide more is evidence that the evidence he provided isn't any good. Reminds me of this old joke:
A farmer is in Iowa during a flood. The river is overflowing, with water surrounding the farmer's home up to his front porch. As he is standing there, a boat comes up, The man in the boat says "Jump in, I'll take you to safety."
The farmer crosses his arms and says stubbornly, "Nope, I put my trust in God."
The boat goes away. The water rises to the second floor. Another boat comes up, the man says to the farmer who is now in the second story window, "Jump in, I'll save you."
The farmer again says, "Nope, I put my trust in God."
The boat goes away. Now the water is up to the roof. As The farmer stands on the roof, a helicopter comes over, and drops a ladder. The pilot yells down to the farmer "I'll save you, climb the ladder."
The farmer says "Nope, I put my trust in God."
The helicopter goes away. The water comtinues to rise and sweeps the farmer off the roof. He drowns.
The farmer goes to heaven. God sees him and says "What are you doing here?"
The farmer says "I put my trust in you and you let me down."
God says, "What do you mean, let you down? I sent you two boats and a helicopter!!!"