The comment seems to assume that most everyone would agree that such sharing of the link should not be taking place due to copyright reasons. That is an absurd assumption to make, to everyone who has been around the internet for a bit.

It would be different if the commenter would be trying to make an actual, intelligently argued case why the link shouldn’t be shared in this instance.

That being said, one could instead link to https://web.archive.org/web/20080718084442/http://lucis.net/..., where the story is “reprinted by permisssion”.

Because downvotes are heavily used to say "I don't like this" rather than "this is not relevant".

I've complained to HN about this and proposed solutions. They don't care.