A paywall is always tolerated per the site rules if there is a workaround. This paywall has a workaround, which already had been posted when the complaint was made. Complaining about paywalls on the other hand is strictly off-topic.

> Are paywalls ok?

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.

https://news.ycombinator.com/newsfaq.html