So, Timmy, is privacy worth being protected or not? How is this 'protecting privacy'? Just because you can obtain these logs, why are you doing it?
I'm not Tim, but I'll wager an answer.
Apple offers a service where it can route calls from your phone to your other Apple devices as part of iCloud syncing. They store you call history as part of your iCloud data as call history is useful to have synced on all your devices and computers able to make and take calls. If you turn off iCloud, they don't store this data, as there's no point to do so.
I would argue that they could do a better job though, by having more granular controls over this feature and allow other parts of iCloud to be turned on with call routing and call-history syncing turned off.