I think the section about UsePrivilegeSeparation can be removed.
I couldnt find this option in the man pages.
According to this release notes:
This release deprecates the sshd_config UsePrivilegeSeparation
option, thereby making privilege separation mandatory. Privilege
separation has been on by default for almost 15 years and
sandboxing has been on by default for almost the last five.
I think the section about UsePrivilegeSeparation can be removed. I couldnt find this option in the man pages. According to this release notes: