Ranting is just a detail here, focus on the point - it’s a place of discussion. Like a tavern back in some older days. People talk here, come up with ideas, act on some of them, and it’s through this ranting, too, that some people may eventually pursue political or otherwise influential careers, try and bring changes they want to see, exerice their rights.

You can’t just get up and go to vote without having discussion either. This is all part of the process.