Paying for news is arguably one of the ways to improve news quality, and quality news is valued by many HN users. The submission includes the source. If you don't want to visit a paywalled source, HN already provides you with the information you need to make that decision.
Here's a comment from 'dang (one of the HN mods) on this topic from about a month ago (https://news.ycombinator.com/item?id=13057425):
Paywalled articles are different. That's a settled matter on HN. The rule is that paywalled articles are ok when there's a workaround:
https://news.ycombinator.com/newsfaq.html
https://news.ycombinator.com/item?id=10178989
Yes, the paywalls suck, but it would suck worse to deprive HN of the better NYT, WSJ, Economist, New Yorker, etc., articles.