True, but for two things.
It was college employees using college resources that slandered them, not just students.
And, they already opened the fish can of policing student speech so you don't get to use that for leaf when it's convenient.
The assertion that this was "student speech," and that the lawsuit was over "student speech," is utterly and intentionally dishonest.
As I recall, Gibson's asked for an apology. The college responded to this request by organizing a much bigger series of protests, led by Oberlin faculty members, including the (then) president of Oberlin.
A level of dishonesty that would under traditional circumstances be characterized as "depraved," but today is simply the status quo for left-wing activism, which seems to have become the purpose of most public institutions.