For years, President Donald Trump and the members of his administration have made it an all-but explicit policy to let factual information come second — if it's considered at all — to what their supporters believe.
As CNN reported, this phenomenon is what led former Trump adviser Kellyanne Conway to coin the term "alternative facts" to describe then-Press Secretary Sean Spicer's false statements about the size of the crowds that turned out for Trump's inauguration. It's also what led Trump and his allies to assert that the 2020 Presidential Election results were influenced by widespread voter fraud despite offering no substantial evidence demonstrating this.
And since such claims have been identified as contributing to the emergence of the riot that saw people clad in Trump paraphernalia storm the U.S. Capitol, both Trump and his allies are now seeing the number of platforms where they can spread them decrease as a result.