While on the subject, the public UserAccessor#isDeactivated method was deprecated late in the 7.x series, with a suggested replacement of DisabledUserManager#isDisabled. But the DisabledUserManager bean does not seem to be accessible to plugins.
Trying to import the interface directly does not work, and neither does trying to do a named import of disabledUserChecker (which is what the actual bean seems to be named). Trying to import the underlying class CrowdDisabledUserManager also fails.
Am I doing something wrong, or is it possible that something needs to be addressed on the platform side?