The edit was rejected because it does not improve the post. The title could use some improvement, but just putting two of the four chords listed in the progression doesn't really help. The OP also represented the progression as a V/III so saying VII in the title is a bit misleading to what the OP was saying.
This edit also is more to service one of the answers that focuses solely on the VII-i aspect. It may be the accepted answer, but the highest voted answer focuses more on the definition of an authentic cadence which it is pointed out involves V not VII and is defined by the leading tone which VII does not have.
This is also very reminiscent when a user was using trivial anonymous edits to bump their post which is another reason why just allowing this edit did not make sense.