I think you're missing an important point that GP made: Apple lately absolutely refuses to give you any kind of error or even status informations in its cloud products (Music, Photos, Notes, ...).
It's meant to just work like 'magic' - as if all wireless connections as well as the server and client software are nowadays so perfect that you'd never encounter error states anymore, and it's all so fast that you don't need progress information on anything. Right.
And in the one place they do give you status (iCloud Photo Library), it regularly shows completely bizarre numbers (I often see stuff like "Uploading 15 photos (369MB / 125MB)"
It's meant to just work like 'magic' - as if all wireless connections as well as the server and client software are nowadays so perfect that you'd never encounter error states anymore, and it's all so fast that you don't need progress information on anything. Right.