Do you have a source on which this rather strong claim is based?

Windows 10 telemetry is encrypted. Anyone can state anything about what's sent. Non one knows for sure. Do have any evidence that is only sent what Microoft states it would? Trust but verify.

All the things I listed are logged in W10, and most of them were never logged in W7/W8.

install W10 and watch your total host writes (for example crystaldiskinfo) per day just browsing the web for couple of days. It will average ~5-10GB/day, most of it is logs.

too late to edit, people thing im lying/joking/trolling. Ever wondered whats in C:\Windows\System32\LogFiles\WMI\RtBackup ? you cant look inside, system only. Performance Monitor > Data Collector Sets > Event Trace Sessions will give you an idea.