Have you seen the signs in pubs that say "No politics or religion please"?
Could it be that Interactive Democracy would increase the animosity in society as debates and arguments become heated? Or would people maintain their decorum, avoid face to face debates, but decide on how to vote based on media coverage of the issues?
I know of no evidence that suggests animosity increases during general elections and suspect this isn't a real problem. Those signs may have more to do with alcohol than arguments.