For sure, according to the Constitution, the OSU students have a right to call for cookies and crayons when somebody expresses doubts about transgender bathrooms. They can *legally* call me a "homophobe" (or whatever the label is when you disagree with transgendered individuals) for that and I can *legally* counter with my opinion on a blog.
We're not talking about what's legal. We are having a public discourse about what is ethical.
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The problem is, the media has (or had) the power to media-lynch people, to label them, and to drive them out of public discourse.
The practical situation is: suppose Moe is in favor of tight border controls (and a 30' high wall). Are you okay with people calling him "racist" and trying to drive him out of his Mayor's office? or will you, I, Diderot and Silentpadna stand up and denounce the de facto "punishment" of politically-incorrect opinions?
The issue isn't whether Keith can *take* it -- he can. The question is whether we are, as a society, discourage the PC labeling that is designed from the ground up to suppress opposition.
Do YOU actively condemn the calling of Moe a "racist" in that situation? Do *I* write in to the New York Times and cancel my subscription when their "reporters" do so? This is the discourse.