> if the rate of fraudulent labs is even as high as 10% you should expect that any viewpoint that it’s widespread would be drowned out by views that it’s not real.

If "it" is fraud here I would expect the viewpoint that it's widespread to be less and less drowned out as it approached 10% since everyone would know that it's real. I think I'm misunderstanding the sentence.

No, the guys at fraudulent labs and the guys at honest labs will both claim no fraud. The only ones who will claim fraud are those who cross over. So you’ll get a vast majority telling you it’s not happening and a tiny minority (even when as high as 10% are fraud) telling you the fact. All rare things have this effect. There will be so many people telling you it’s not real “as someone in the field”. They will be adamant about it. You need someone who has seen both.

To be clear, not “as it approaches 10%”. I mean “even as high as 10%”.