It is fast but, nowhere close to accurate or useful for this specific example. Could not find a way to force the plural form. Neither quotes nor plus worked.
There is an offline version: https://www.diagrams.net (they had to change their name from draw.io recently). There is a download button right on the main page.
Go to Settings, scroll down to find the app, and select it. Then you get the "Allow <app> to access" and a list of entitlements, one of which is "Photos". Select "Photos" and you get three options "Selected Photos" (which is what you likely have), "All Photos", and "None". Push "None" and you should never see that dialog again.
My photos are very important to me, so i do several backups:
1) The iPhoto Library is rsync'd to an external HDD
2) The iPhoto Library is rsync'd to a local FreeNAS box
3) Arq backup to S3 http://www.haystacksoftware.com/arq/
4) Crashplan backup to 3 locations: an external drive, a local server (not the FreeNAS box), as well as Crashplan central.
It is fast but, nowhere close to accurate or useful for this specific example. Could not find a way to force the plural form. Neither quotes nor plus worked.