"...argue that the secret science legislation would force EPA to ignore numerous studies. They say that not only do many studies contain public health or industry-submitted data that are confidential, but the legislation provides too little funding for EPA to obtain all the necessary raw data. And many studies, such as longitudinal surveys, are not realistically “reproducible,” scientific organizations worry."
As far as republican backed industry is concerned, anything like health and environmental issues that prevent them from doing whatever the hell they want is bad. The EPA is a big supplier of those things they hate, so if they can cripple the EPA, they get to do more things to make them money, despite it being dangerous to the public health and safety.
So yes, they are trying to pull a fast one by attempting to eliminate as much as they can.
It's kind of like a mafia lawyer trying to get the judge to throw out all witness testimony that is not 1st hand police testimony, or all evidence that has been touched or operated by someone other than a cop. So Uncle Johns being in the room and seeing Vinnie the Slasher cut up the victim gets thrown out, along with the fingerprints from the door because Uncle John used it to run out screaming for the cops, of which he is not one of. And forget witness protection also, you can't hide the names and address of Uncle Johns family either, since that kind of confidential information isn't "transparent" enough...
Again, yes, it's a scam attempting to cloak itself in respectability. (Or more like trying to sneak sarin into the theater by hiding it in an empty first aid kit wrapped in bandages.)