I read the VOX article and made some notes.
The author wrote:
[Members of the university community] have the right to academic freedom, not First Amendment freedom of speech. Academic freedom is defined in terms of the twin missions of the university; it encompasses freedom of research and freedom of teaching. Academic freedom does not entail the equality of ideas. To the contrary, it is defined as the freedom to engage in professionally competent teaching and research.
Freedom is about choice. Academic freedom has to mean the ability to make choices - in this case, in a university setting - choices that are academic in nature.
Because the first amendment is a limit on government, it makes no sense to attempt to apply it in a private university. In other words, if a person owns a building, he does not have to provide the use of his building for speakers he does not agree with. It is because he is a private individual that it makes no sense to refer to this as "censoring" the speech of others. It is only the government who can violate the first amendment. That is why the amendment was written - to protect the individual right to speak ones mind.
It does make sense to examine a decision made by an arm of the government. That is, to ask if the government is attempting to stop private individuals from speaking their minds. So, the question becomes whether or not the administartion of a tax-payer supported university is engaged in censorship. The first amendment restriction on government censorship is what makes possible any legitimate academic freedom.
If a school in a communist state teaches Marxism and a hatred of Capitalism we know that it is propaganda. The same ugly principle happens when an Islamic state will only permit the teaching of its Islamic theory and censors all other speech.
In a free state, a private school can teach Islam, Marxism or whatever it wants. But when the taxpayers pick up some or all of the cost, they are paying for propaganda.
The real issue here is that all systems, other than Capitalism, are attempting to force people to think one way and finding ways to use force to stop speech they don't agree with. Today's progressives have captured much of the educational system and are hiding behind freedom of speech. They are using claims of academic freedom to deceptively trick the entire nation into accepting a form of censorship. The cowardice extends to allowing violent protests to disrupt speech that is politically incorrect.
Political correctness is a form of on-going thought-control. It is being implemented psychologically, academically, culturally - not just through laws or government force. Drowning the university setting in political correctness is just another means of implementing the ultimate, collective control of every aspect of everyone's life by a centralized elite.