Controversies are caused by the revelation of a suppressed truth, or the revelation of lies which could be true. If something is obviously nonsense, eg. a claim that the moon is square or that the sky is green, then such claims are not worthly of commentary, debate, or attack. The same is true of something obviously true.
Commentary, debate, attack emerges from things in between, things which are true but painfully so, unpleasant truths, or lies which are uncertain and feared to be true. The controversy becomes a manifestation of suppressed fear, or the fear that others will believe, and act upon, the lies as if true.