Why does the General Account need the Replicate Directory Changes and Manage Replication Topology (4330521)

Why does the General Account need the Replicate Directory Changes and Manage Replication Topology rights.

Replicate Directory Changes Right - The account needs this right to be able to use Active Directory's Directory Synchronizer (ADDirSync) Control, which allows for retrieving all changes since a particular moment of time.

Manage Replication Topology Right - The account needs this right for the QCS Tomb Stoning Mechanism to be able to retrieve information on when a particular objects attribute was changed.

Please also see the following additional KB articles:

What permissions are necessary for deploying Collaboration Services for Exchange?
https://support.quest.com/SUPPORT/index?page=solution&id=SOL9801

Mailbox test fails: It is not possible to check the mailbox configuration, Error codes 32623 and 32622 appear in the event log
https://support.quest.com/SUPPORT/index?page=solution&id=SOL45555