I do not understand. Please say what you mean in your message instead of just dropping some urls:s. For example now, your url:s goes to this submission and an unknown (!?). If you had written what you meant at least I could understand your point.
https://news.ycombinator.com/item?id=16722817
might shorten to https://news.ycombinator.com/b00b00
which is not very short given the length of the hostname.