He had his chance and didn't take it? When asked to give a specific example of one of the problems with NASA he chose a fuel handling problem. It seems to me that he didn't have any information about a cover-up of the fact that the rockets really didn't fly or were in any other way non-functioning. It looks like all of his testimony is about things that were legitimately safety related.
At the time of the congressional hearing Apollo had yet to reach orbit. The program was still in the development stages. It didn't fly, and with the many hundreds safety discrepancies Baron alleged and pointed out in his reports it never would. Baron listed safety violations above any other violations.
Here's his quote again:
Mr. BARON: Very well. It is quite varied as to our problems are. As most people have said and realized, it is so extensive and covers so many areas it is difficult to believe that some of them even existed. I would say basically that we have had problems, extensive problems in safety, in cleaning materials, in items getting in the spacecraft that weren't supposed to be there, the morale of the people, the pressures put on the people by management are the things that really indicate that we don't have the proper management that we should have in this program.
Baron is saying that
everything is wrong with NASA's practices, from outrageous safety violations to the pressures put on the underlings by management. Baron is expressing his amazement that NASA's state was in such shambles that there was not one good thing he could say about it.
At the very start of the hearing Thomas Baron complained of a lack of communication. NASA deliberately kept their facilities sectionalized and put up numerous barriers for sections to communicate with each other. In this way no one group could know what gizmo or gadget the other group had been instructed to build or test. Only the top management could fit the puzzle pieces together. By keeping their employees in a thick shroud of ignorance it prevented anyone from gaining a clear understanding to the true purpose of the machines they were contributing to build.
Once Baron started asking too many questions and piecing too many of the puzzle pieces together NASA fired him.
Why talk about cleaning materials and morale when you have this big cover-up to expose?
NASA doesn't tell everyone who works for them that the program was a "cover up". Only relatively few at the top knew the true purpose and aims of the organization. Baron, and others like him were tasked with building or testing small parts of the craft to be submitted for review and constructed into their final design at a future date by parties unknown. The entire organization was so uncommunicative with each other and kept in the dark that morale was at a dangerous state. Baron complained of employees being forced to work in isolation, only being instructed by their immediate superior and never seeing their work go through the integration and testing steps.
From what Baron tells us, the conditions were akin to being put into a white room and being told to build widgets to certain blueprints every day and then to place the completed product into a bin when you were done. That's as far as your participation or knowledge went. A low or mid-level employee had no knowledge of what his work was going to be used for, and no knowledge of its true purpose. There was no communication, and little to no face to face interaction. Even a hamburger flipper at McDonalds interfaced with more people and saw the results of his work with far better clarity than someone working at NASA did.
That's precisely why Baron felt that NASA was an organization which would never reach the moon - its structure was built around keeping everyone as out of the loop as humanly possible. This was the biggest safety violation in Baron's opinion and is why he mentions it first and foremost in the Congressional hearing.
It's unfortunate that we'll never get to see Baron's 500 page report which described NASA's violations in exact detail since he and his family experienced a desire to commit suicide together by parking their car on train tracks exactly one week after his public decry of NASA.