If that quote is true then it points to a complete whitewash of a report.
First of all it points to a perfectly normal process. All involved parties get a preliminary report and have the chance to comment. This may provide the investigators with aspects, views and technical details they did miss so far. (for example a manufacturer may have test flown specific scenarios already, with different findings than the investigator would assume)
However.... There is of course always a risk, that the most powerful party gets most of its view into the report. A complete whitewash is rare, but one must always read an accident report with the fact in mind, that there might be some information missing or some information included which is not that important. It is hard to seek for assistance without being manipulated.
So do I suspect a complete whitewash? Not at all!
Do I expect a 100% objective report? Well, within the typical limits of a job which is heavily influenced by politics. So I guess that is a No as well...
Sometimes it is easier if the aircraft remains missing...