An article published 5 hrs ago on Apple News & 6 hrs ago on TechRadar on the subject of backing up digital photos mentions three outdated/bypassed Mac apps. It mentions iPhoto (free) and Aperture ($79.99) as now being able to share the same libraries and iPhoto Library Manager to manipulate such libraries.
Really switched on and up-to-date are they. NOT.
Photos app came along with the intention of replacing iPhoto & Aperture, which in itself was made a free app several years ago. Aperture still works but is no longer available or supported; iPhoto still comes installed on new Macs and Fatcatsoftware, the iPLM developers also released the PowerPhotos app, initially as a free upgrade to iPLM Pro users such as myself.
Idiots. Do a bit of research.