I don't see the report as absolving the industry of wrongdoing. In fact, I believe it is particularly damning, and many of my colleagues feel the same. No one is on the side of OpenAI here, not even its own members.
As for submitting the report back to OpenAI for comment and working with them, given that there is currently no government mandate or requirement for any AI company to disclose wrongdoing, this seems like an unfortunate necessity. Independent bodies and governing agencies have to be created. At the moment, it is the industry regulating itself, which means no regulation at all.
So no, you do not need to believe that the document is truth. But it is all that we will likely get, because nobody with any power will do a damn thing. That is just as frustrating to the researchers as it is to you. The solution is not to defund the institutes doing needed research. It is to put laws or incentives or something in place to punish inappropriate behavior and lack of disclosure for the companies.