The phrase "entire article" means the complete and full piece of writing, from the beginning to the end. It refers to reading or referring to the whole content, not just a part of it. Full definition
You can read entire articles just dedicated to this topic. (chooseterm.com)
We don't like to write entire articles on news that's already been covered extensively, so this section is great for a quick rundown of the big news. (pointsmilesandmore.com)
I've written entire articles on the fact that fat content is the primary driver of glycemic index. (perfecthealthdiet.com)