It does eventually. React framework is all about manipulating DOM but no the curriculum doesn’t teach you about DOM manipulation with vanilla JS.
Maybe you could post something about it on github issues on freecodecamp.
You will have to complement fCC curriculum with other resources! It is not only the DOM that is not included in the JS curriculum , for example in CSS the Box Model which is important, is also not included.
There is a lot of important stuff missing like deployment, Git and GitHub etc… The new v7.0 fCC curriculum is coming and hopefully things will change for better. https://www.freecodecamp.org/forum/t/help-us-build-version-7-0-of-the-freecodecamp-curriculum/263546
Actually it doesn’t. React hides all the DOM manipulations in its internals.
Luckily there are good people on youtube: https://www.youtube.com/watch?v=0ik6X4DJKCc&list=PLillGF-RfqbYE6Ik_EuXA2iZFcE082B3s