I should have phrased that better. Didn't mean only doers matter. People who bring attention to things matter. But there is a line above which discussion does not matter. And I think news/social media and internet forums push things way over that line to the point where people are recognizing all the jibber jabber going on isn't translating to outcomes.
In the context of the linked article, HN for example could easily shut down 2 days a week and Planet Earth will continue to spin. And maybe the mods(and the addicted readers) will get a break from what appears to be a thankless energy draining job.