bp_comments_open( bool $open, int $post_id )

function bp_comments_open( $open, $post_id = 0 ) {

	$retval = is_buddypress() ? false : $open;

	/**
	 * Filters whether or not to force comments_status to closed for BuddyPress post types.
	 *
	 * @since BuddyPress 1.7.0
	 *
	 * @param bool $retval  Whether or not we are on a BuddyPress post type.
	 * @param bool $open    True if comments open, false if closed.
	 * @param int  $post_id Post ID for the checked post.
	 */
	return apply_filters( 'bp_force_comment_status', $retval, $open, $post_id );
}