HN policy is that submissions always link to the primary source. Alternative proxy links (Thread Reader, archive.today, archive.org) are welcome in the comments, but as they are not the primary source, they should not be submitted as the HN topic.
Otherwise, eventually word would get out to content creators that, if they want exposure on HN, they'd have to put their content somewhere other than Twitter/X.
> On-Topic: Anything that good hackers would find interesting.
If there's things on Twitter that are interesting, they may be submitted. Blocking Twitter would effectively block quite a few interesting submissions. Furthermore, most people don't go to Twitter to get HN upvotes; they're going there for likes and retweets.
Blocking Twitter would effectively block quite a few interesting submissions.
I would guess that they get upvoted because people aren't aware of the concern, people are aware but disagree, people are aware and at least sorta disagree but didn't notice this time, or there's shill upvoting.
Regardless of the reason, in theory, HN might have the power to change the behavior of Twitter/X posters.