This "scripture study" mentioned here refers to the documentary hypothesis and other forms of historical criticism of the Biblical texts. These were invented by liberal Protestants, and are nothing to be proud of. But don't worry, the Catholics have caught up with, if not surpassed, the liberal Protestants when it comes to Biblical studies for a long time.
My own personal opinion (which won't even get you a cup of coffee) is that it's far better to not read the Bible but believe it implicitly than to read it well while tearing it to shreds.
I'd be willing to be you a dozen donuts 99% of the people during this period had no idea what the documentary hypothesis is.