Advocates for free speech that support a "public square" model of free speech but who refuse to adapt that to the modern digital communication systems are doing

Advocates for free speech that support a "public square" model of free speech but who refuse to adapt that to the modern digital communication systems are doing more harm than good in my opinion. A public square filled with nation state actors influencing the volume and contents of the subjects of discussion in the public square are doing more to inhibit free speech than any technological solution owned by a social media platform. Corporate censorship is a lot easier to fight, as users can walk or investors can react when things are not matching the desired effect. It's not perfect, but better than an open-ended "everything free" world where it can be manipulated by those with the right resources (in my opinion). What we need is for people to get a lot more creative with how to create, support, and sustain free speech online without relying on millennia old concepts which do not map to our current problems quite well.