It is speech. I believe that they should be free to express it only if - they allow their target to reply to it (and have it displayed alongside with their pos

It is speech. I believe that they should be free to express it only if - they allow their target to reply to it (and have it displayed alongside with their post) -- this is the most important - they are being honest in their arguments (not intentionally constructing straw-men for example or repeating over and over the same thing that was answered before)