Here is a quick solution to get the post count any kind of filtering you want
function custom_get_user_posts_count($user_id, $args ); {
$args['author'] = $user;$user_id;
$args['fields'] = 'ids';
$ps = get_posts($args);
return count($ps);
}
Since this function uses get_posts
you can filter and use anything that you can with WP_Query
So in your case you can use it like this:
$count = custom_get_user_posts_count($user_id, array(
'post_type' =>'post',
'post_status'=> 'draft'
));