Any user account inactive for a period of time of 2 consecutive years will have their permissions removed. Inactivity is defined as no edits and log actions in that 2 years period.
Users misusing this toolset by repeatedly marking bad edits as patrolled, or using the rollback tool to revert constructive edits, or for edit warring or content disputes, may have their permissions revoked. Removal can be done by an administrator at any time, at their discretion. Advance notice is not required, but may be given. Users who have had their permissions revoked may not be re-granted the permission without a formal application.