And some of the most common writing advise you will find, especially around getting out of writer's block, is to just write stuff down without correcting errors. Just get the first draft on paper. Some authors even choose to use typewriters or pen because they don't allow them to easily go back to fix typos

Then in the second and third pass the author is obviously more concerned about fixing continuity, story and flow than about hunting typos.

Apropos typos: writing advice