Twitter is currently helping to destroy America.
Perhaps some don’t want that to stop by allowing actual free speech.
They know that Musk would let President Trump back on. They ain’t having that.
The Saudis are heavily invested in exporting Wahhabism and by extension “fundamental” Islam whose twits are not banned under the current regime. Under Musk, they might be banned, since they advocate death and violence. The Saudis cannot risk losing that “voice”.