Sure, but they’re not saying it doesn’t work at all. They’re saying the evidence for the benefits of trade is still abundant, but that they need to see where the risks are occurring and how to mitigate them.
Evolutionists and climate scientists are constantly disagreeing and revising their theories, but that doesn’t mean they disagree about the basic facts revealed by the evidence.
I don’t know of a single economics teacher or scholar who would say that Adam Smith “had literally no idea how human beings behaved whatsoever.” That doesn’t mean they’re not out there, but Adam Smith (who, btw, advocated for a variety of public works, schools, etc.), despite some disagreements with his larger theories, has a much higher level of esteem in his field, than, say, Freud.
Charles Darwin was criticized for similar reasons, he was just one man making personal observations. But it didn’t matter, because he was right. I think most economists think Smith was right more than he was wrong.
Like quantum physics and cosmology (two more disciplines in which opinions and theories are constantly revised, despite general agreement on the basics), I probably wouldn’t understand the hard facts if they were handed to me. That’s why I rely on consensus from the experts.
That said, I think economics is more like sociology and psychology, in that hard data is much more difficult to obtain and much more open to subjective interpretation. My position is that I believe there is more evidence for the idea that free trade is a net positive. I am, however, nowhere near as certain of that as many here are of the opposing view.
What I feel much more certain about is that the question is still an open one, and that people who disagree about it aren’t liars or villains.