How anyone ever got the idea that academic freedom that fosters radicalism was desirable or good is beyond me. Where does this come from? And where did the idea come that professors should be immune from public scrutiny or accountability for their extremist views?
Probably a legacy of the 20th century. One of the most effective devices used by Marxist radicals associated with the Stalinist Soviet Union was to use "academic freedom" as a cover. This is one of the ways the Soviet Union acquired a bevy of "useful idiots" in the 30's, 40's and 50's...