:recycle: Greatly simplified refactor using map over reduce

backend/lib/routes/membership/active.js

                 return ids
             }, [])
             /** Assemble complete profiles to reference and pass */
-            let completedProfiles = await profileService.getProfilesFor(
+            const completedProfiles = await profileService.getProfilesFor(
                 pIds,
                 'participant',
                 false,