Did you skip the entire 6.0 manderville quest dialogue? LOL. If you play FF at all, you should know there’s usually a high tech civilization that got wiped out a long time ago, so technically yes, it could be a relic just not in the traditional sense. A relic of an “ancient high tech civilization.” But more specifically in this case, an ancient alien race that died off. The final step totally fits that motif. I do agree that the tomestone grind definitely seemed low effort.