There isn't anything to suggest that Nukalurk egg clutches were ever intended to produce their own egg variant when harvested. No related cut content remains (if it ever existed) in the plugin or the game files, and it's more than likely that Bethesda simply chose not to add another egg variant, as opposed to just forgetting to do so. The items produced by this fix have no functional purpose other than selling, and since adding uses for them would be outside of the patch's scope, it's best to undo the fix entirely.