&quot;Healthy, positive communities&quot; is an oxymoron.<p>A healthy community has healthy and sometimes necessarily intense disagreement in its discourse (just as a healthy mind questions itself).<p>A &quot;positive&quot; community has no disagreement at all - or at least none that go deep enough to resolve really serious differences.<p>The only way to maintain a &quot;positive&quot; community the way they mean is to simply ban everyone with views outside a narrow opinion corridor. But <i>whose</i> opinions will define that allowed opinion corridor? From the euphemistically fuzzy language and focus on good emotions, I think I know.