@konrad I disagree. Link rot is the responsibility of the creator of the link. You may try, if the link matters to you, to have it saved, for example in the Wayback Machine, but ultimately, it is not your responsibility.
It is actually quite easy to ensure that any page you link to is automatically added to the Wayback Machine when you link to it. If you really care, you should be doing that. And supporting the Internet Archive.
// @matigo