public function remove_all_users_from_all_objects( $meta_key = '', $meta_type = 'post' ) {

		// Query for users
		$option_key = $this->get_user_option_key( $meta_key, 0, true );
		$bbp_db     = bbp_db();
		$user_ids   = $bbp_db->get_col( "SELECT user_id FROM {$bbp_db->usermeta} WHERE meta_key = '{$option_key}'" );
		$u_count    = count( $user_ids );

		// Count number of removals
		$removed    = array();
		$r_count    = 0;

		// Users have engaged, so remove them
		if ( ! empty( $u_count ) ) {

			// Loop through users and remove their user options
			foreach ( $user_ids as $user_id ) {
				$removed[] = $this->remove_user_from_all_objects( $user_id, $meta_key );
			}

			// Count the removed users
			$r_count = count( $removed );
		}

		// Return true if successfully removed from all users
		return ( $r_count === $u_count );
	}