The argument would be along the lines of "It will stifle debate and silence voices on topics outside the orthodox view. A simple glance through the history of s

The argument would be along the lines of "It will stifle debate and silence voices on topics outside the orthodox view. A simple glance through the history of science shows many ideas now regarded as fact were initially heretical and outside the mainstream. Open discussion of controversial ideas is healthy." which is obviously reasonable. However it needs to be balanced against the other problem we face - widespread dissemination of inflammatory misinformation, in many cases by nation states deliberately sowing dissent.