The conclusion of this article I think is overly simplistic and it's driven by a need to justify various forms of bigotry under the guise of free speech, imo. Certain ideas shouldn't have an airing since their time has come and gone. We no longer need to 'learn' about eugenics since it's been shown to never fit with the scientific evidence.<p>For example, transphobia has been deliberated in the marketplace of ideas and they lost out to the evidence to the contrary on numerous points (ex. claims that transgender individuals commit more suicide post-GRS has been proven false by numerous studies). There's no more room for debate on such issues. If people want to continue to "teach the controversy" or whatever, they can do it on their own time but not that of other's.