That precedent creates a stigma when discussing such topics. Let's say that you don't quite understand a particular viewpoint (doesn't have to be this - another good topic is racism & discrimination). Where do you go to learn more about the topic? Especially when you're aspiring to be a leader, this stigma incentivizes holding on to half-baked ideas that you simply can't discuss with anyone. That, in turn, creates a culture of double-speak.

So, in other words, good first-order effects, but bad second-order effects.