Not sure that I agree that it "does not impact trading" since so much trading is done by bots / algorithms these days. Bad data definitely impacts trading. I

Not sure that I agree that it "does not impact trading" since so much trading is done by bots / algorithms these days. Bad data definitely impacts trading. I think what they mean is that no one can actually sell for these inflated prices, since each trade requires two parties, and no one is buying at these prices.