The statement you quoted was stating that you couldn't pick up a book, look in the Table of Contents, and open the book to page 367 to the beginning of the book of Psalms. In order to read from the Psalms, you had to go into the chamber in the tabernacle wherein the scrolls were kept, and locate the specific scroll that contained the specific passages you needed. That is what they were doing. And the Bereans likely only had a few dozen scrolls. As far out as the Bereans were from Jerusalem, the likelihood that they had the entire Old Testament at hand was unlikely, especially considering that they were calling them the "writings", and not "the Law and the Prophets". This is further evidence that they didn't have the entire Old Testament with them.
Besides all this, there was a hot debate over the canonicity of the Greek texts at the time. And there were two end results, depending on whether you follow those debates in the Christian Church, where the Greek Septuagint became the first Canon of the Old Testament (yes, including the portions Protestants leave out), or in the post-temple-worship Jewish community, wherein the Masoretic canon became the norm about 200 years AFTER the Christians settled on the Greek.
The point is that if you don't know what books belong in the Bible precisely, you can't live by Sola Scriptura.
The second point against Sola Scriptura is that if you don't have ACCESS to the Scriptures, whether because of linguistic barriers, or because the texts simply aren't there, then you are unable to live by way of Sola Scriptura.
The third point is that because Scripture is a text requiring interpretation, and interpretation can radically alter how you understand Scripture, that interpretation method is a tradition that stands in authority over Scripture. The real choice, therefore, is which tradition you will choose, because nobody can live by the precepts of Sola Scriptura purely. There will always be a tradition over your Scripture. The canon is one, and your systematic theology, catechism, pope, or Church Tradition is another.
In the end, Sola Scriptura is an unpracticeable doctrine in its pure form, meaning nobody reads simply the plain sense meaning of Scripture. There is no agreed upon idea what that plain sense IS.