On Facebook, you now can't post the link to this New York Post article: https://nypost.com/2021/04/10/inside-blm-co-founder-patrisse... FB will also prevent you from posting the Newsweek article which describes how the platform is blocking the New York Post article. Same link as in the title: https://www.newsweek.com/facebook-prevents-sharing-new-york-...
Yes, but will they prevent you from posting a link to the HN discussion of the Newsweek article about them blocking the NY Post article? Is it possible that Facebook is a big enough share of the internet that they can block the Streisand Effect? My money is on "no".
The co-ordinated efforts of a small number of corporate actors probably is. We live in a gov-valley-sov-corp media ecology with fairly sophisticated mechanisms of message control. Maybe the old netheads were wrong about streisand effect - maybe that was a temporary material condition.