bp_groups_exclude_group_type( bool $qs = false, bool $object = false )

function bp_groups_exclude_group_type( $qs = false, $object = false ) {

	$args = wp_parse_args( $qs );

	if ( $object !== 'groups' ) {
		return $qs;
	}

	if ( bp_is_groups_directory() && isset( $args['scope'] ) && 'all' === $args['scope'] ) {

		// get removed group type post ids
		$bp_group_type_ids = bp_groups_get_excluded_group_types();

		// get removed group type names/slugs
		$bp_group_type_names = array();
		if ( isset( $bp_group_type_ids ) && ! empty( $bp_group_type_ids ) ) {
			foreach ( $bp_group_type_ids as $single ) {
				$bp_group_type_names[] = $single['name'];
			}
		}

		if ( ! empty( $args['group_type__not_in'] ) ) {
			if ( is_array( $args['group_type__not_in'] ) ) {
				$args['group_type__not_in'] = array_merge( $args['group_type__not_in'], $bp_group_type_names );
			} else {
				$args['group_type__not_in'] = $args['group_type__not_in'] . ',' . implode( ',', $bp_group_type_names );
			}
		} else {
			$args['group_type__not_in'] = implode( ',', $bp_group_type_names );
		}

		$qs = build_query( $args );
	}

	return $qs;
}