Apparently if you're a YC alum you can get to the top of the front page of HN posting an advertisement to go read someone's paywalled Wall Street Journal op ed, with a broken link when you click "read the rest".
It's ok to post stories from sites with paywalls that have workarounds.
In comments, it's ok to ask how to read an article and to help other users do so. But please don't post complaints about paywalls. Those are off topic. More here.
https://news.ycombinator.com/newsfaq.html