\Drupal::routeMatch()->getParameter('node') should return the node object on both revisions and the current node page's path

With code like $node = \Drupal::routeMatch()->getParameter('node'), getParameter() returns a string (the nid) on a revisions page but a full node object on a normal node page. Speaking with some folks in IRC, I was asked to report this as broken as getParameter should return the node object in both cases.