I'm not sure what leads you to your conclusions but I do not recall ANY such removal of posts. Take a look at this thread for instance on the analytics
https://www.mobileread.com/forums/sho...d.php?t=162713 .
As far as reading stats go, the approach that was tried involved placing the modified ePubs in the .kobo directory tree. Unfortunately while this did allow stats to be gathered, it had the side effect that any syncing with Kobo, via either WiFi or Desktop would delete those books from the device.