Expository writing is fact based so why does it sometimes include more than just facts

There are many reasons why you might want to include more than just facts in an expository writing. While most of your text should be fact-based, sometimes you can elaborate on these facts by adding your opinion. You can also elaborate by using about literary devices that provide vivid descriptions or examples. These elements make a text easier to understand and more enjoyable to read.

gurl whut are you saying lol