It's a fair question. No, no desire to curb anything because of who is going to do the curbing. Any regulating entity (government or private) will use subjective judgement and will invariably devolve into censorship. The concern of course is that humans as a crowd are dumb, but on the other hand I think you give individuals too little credit. A smart person won't get his/her political views from random X posts.

The problem is that most americans do not know first hand how the real censorship looks like. In the context of the previous discussion in that thread, chinese and russian firewalls block any discussion of gay rights issues. Do you think the US will be any different? We are all humans with the same deficiencies. Any "firewall", however it is implemented, will be a double edged sword that will eventually start cutting one way, and you won't like the result.

To sum it up, yes, it's the least of all evils.

If you would like to deride the answer, I assure you I am quite immune to the effort.