Currently it says
Various Artists should not be used on tracks, make sure that the artists on these tracks have been entered correctly.
This is not strictly true. Suggest that better might be
Various Artists should very rarely be used on tracks; make sure that the artists on these tracks have been entered correctly.
There is probably still a case for using VA for some medleys requiring http://wiki.musicbrainz.org/Tracks_With_Multiple_Artists where perhaps using the DJ Mixer is not appropriate.
Release to test with: http://musicbrainz.org/release/f7355b52-a9c5-434f-b2f6-e020793ea85a