If that was remotely true then why wouldn't the topic be handled at the training level? Instead, Twitter is censoring references to Russia's invasion of Ukraine through the same mechanism used to kill DMCA violations. This is not an approach motivated by "engagement".
HN did the same thing with Bitcoin when it was soaring in value. I remember the front page felt like it was 90% Bitcoin. I was grateful that HN added an exception, bringing the discussion back into balance.
However, I am unaware of a public position HN has taken in relation to "free speech absolutism" or denounced the moderation of content as "proof that the woke mind virus has infected peoples brains"