Piracy groups had no role in iZotope’s actual code quality — but the release label spread widely on torrent and warez forums. The “new high quality” phrase in your query probably originates from an NFO file where ASSiGN praised their own crack as “high quality” (stable, no malware, working preset handling).
Ozone 5 Advanced includes several "Advanced-exclusive" tools designed for professional-grade mastering: izotopeozone5advancedv502x86x64assign new high quality