Since Jack Dorsey's first mention of a new standard of open tech back in 2019, Twitter has gotten significantly worse for free expression. Banning people for questioning their government was a new low and then moderating governments all over the world showed Twitter was drunk on power.
Dorsey says he likes Bitcoin because it's a "foundational internet technology that is not controlled or influenced by any single individual or entity."
But the spirit and simplicity of that principle with regards to speech could be implemented on Twitter now, at least in policy, regardless of technology.
There's no need to reinvent the wheel when it comes to free speech - it has been debated and refined for millennia by better minds than Jack Dorsey, and opponents of it have always been history's villains. Complex times require simple rules.