Sometimes a paywalled source is the first to report on something. Calling that link a bad link is nonsense.
90+% of the time, using reader mode will bypass paywalls anyway.
Many people don’t know all the websites to redirect things through without that, so calling their contribution “bad” just because they posted that link isn’t the greatest.
It’s not even like it’s that big an issue, because usually someone else comes along that provides an alt link in the replies, so saying that this is a social failure is also ridiculous, because both were provided between two people.
Also, the notion that you or anyone else is socially filtering non-misinformation news sources from the rest of us, because you don’t see the value in it, or cannot figure out how to bypass the paywall yourself, isn’t all that great either.
edit: it’s also worth pointing out that if some people contributing links happen to be subscribers to a news source, as a subscriber they won’t necessarily know that a certain article is paywalled for everyone else, until they share it and someone who isn’t a subscriber gets the notice.