I think the twitter.com -> x.com migration broke X.com on HN. See https://news.ycombinator.com/item?id=40390595 and a few broken examples at https://news.ycombinator.com/from?site=twitter.com/x
In general, I'd rather we link to sources rather than other references.
General links to X have been almost useless in some browsers for a while now.
Now finally completely useless compared to yesterday.