Maybe. In Episode InterMISSION, a post-launch DLC for Final Fantasy 7 Remake starring Yuffie Kisaragi, we see this revelation unfurl a bit further when Zack visits Aerith's church with the hope of ...
Related: Final Fantasy VII Rebirth Hands-On Gives Players Everything They Want From the Remake Zack Fair was a former First Class SOLDIER under the employ of the Shinra Electric Power Company.