Jailbreak not installing dispatch.sh

Hello,

I noticed that jb.sh neither installs "${ROOT}/usr/bin/logThis.sh" nor "${MKK_PERSISTENT_STORAGE}/dispatch.sh". (However the bridge still executes 'install_log')

I guess that there is a good reason for this, but I can't find it on the forums.. :/
The closest I found was in https://www.mobileread.com/forums/sh...d.php?t=320564 :

But why?

Also I wonder what a 'OTA package' is, and how it is different to the normal update_*.bin files.

And what is the technical difference between 'Update_KUALBooklet_44a61b6_install.bin' and 'Update_KUALBooklet_hotfix_44a61b6_install.bin'?
I realize that 'hotfix' variant was made to be used as UYK (Update Your Kindle), but what allows this?

Thank you