There's also a lot more history as well. Elon has done a [serious] interview with the Babylon Bee before [1] and also propped them on Twitter [2]. When they were banned he contacted the head of the site to confirm they had been suspended, and even mentioned to him that he might have to buy the site to fix their behaviors. [3] That was just before he ran the poll on Twitter, seeing whether people viewed the site as supporting free speech or not. [4]

[1] - https://www.youtube.com/watch?v=jvGnw1sHh9M

[2] - https://twitter.com/elonmusk/status/1331698780073320449

[3] - https://twitter.com/SethDillon/status/1511325246967660547

[4] - https://twitter.com/elonmusk/status/1507259709224632344