yes.. so anywhere between 0% and 0.9999999999 (recurring) %
Yep, and considering the total number of iCloud users is continuing to increase by the minute, it would be pointless to be so precise in the percentage that it's inaccurate by the time people see it.
A few years ago Gmail went "down" for a number of users and ended up losing all email for some of the affected accounts. Mine was one of those which wasn't recovered.
Outages happen, we all know they do, and we'll all get really annoyed if someone complains for every single one.