When you edit a page on a site where you don't have enough rep to edit without needing approval, it says this:
Your edit will be placed in a queue until it is peer reviewed.
We welcome edits that make the post easier to understand and more valuable for readers. Because community members review edits, please try to make the post substantially better than how you found it, for example, by fixing grammar or adding additional resources and hyperlinks.
Also:
How to Edit
- Correct minor typos or mistakes
- Clarify meaning without changing it
- Add related resources or links
- Always respect the author’s intent
- Don’t use edits to reply to the author
This specifically encourages "[c]orrect[ing] minor typos or mistakes," and gives no indication that this shouldn't be done in large volumes. If I didn't know better, I would think that fixing typos on as many pages as possible would be seen as constructive; there is certainly no indication that it is discouraged. This might be obvious to established users, but to anyone else, it is not at all clear. Most new users probably don't even know that edited pages go to the home screen, and even if they do, it's not obvious that that's bad.
It does say to "make the post substantially better than how you found it," but specifically listing "[c]orrect[ing] minor typos or mistakes" as a useful type of edit implies that these edits are considered to substantially improve the post.
Should the edit page indicate that large volumes of edits are not desirable?