Looking at the revisions of this question made me think some unnecessary edits were done. Clearly, the third edit is completely unnecessary. Also, too much edits has changed the problem. Please be more careful while trying to figure out if an edit should be approved or rejected or improved.
This has nothing at all to do with approval of edits.
It is very clearly a case of cross-editing which is frustrating for the first editor whose edit is overwritten, but is the inevitable result of a post so badly written that many people start to edit it simultaneously.
In case you saw the question after the third edit, I would have suggested that you roll back to your edit and leave a comment that you assume a cross-edit.
I find it more annoying that the post is still asking for an explantion after five edits.
With regard to the introduced error: This error was introduced in version 3 which was clearly a cross-edit of the first version. So, yes, an error has been made, but it had nothing to do with the high number of edits.