The book argued that slavery was an economically rational institution and that the economic exploitation of slaves was not as catastrophic as presumed [...]
From what I can tell everyone thinks the conclusions around economic efficiency were true
Many in the historical community were impressed with the authors’ application of cliometrics. In general historians and economists agree with the conclusion that slavery was efficient and economically viable but had more mixed attitudes towards the material well being of slaves.[5]
Can you list some particular papers?
The big one is Time on the Cross by Fogel. Wikipedia says
From what I can tell everyone thinks the conclusions around economic efficiency were true