wrt the invited speaker, he’s not as mild as the article linked above would let you think: it should be noted that his party is in favor of illiberalism in the political/philosophical 18th century sense, ie., against separation of powers, freedom of speech, freedom of the press, and has tried to pass a law making denunciation of antisemitism or nazi crimes more difficult including revising history textbooks (originally some aspects of speech indicating a link between antisemitic persecution and polish people was actually criminalized). ‘Should you have speakers on campus who advocate against democracy as we know it and are in favor of “cleansing” the memory&history of the holocaust’ is an actual issue, not a sign Middlebury has a special problem.
It’s entirely irrelevant to the chemistry professor’s case and tying the two cases doesn’t really shed light on what happened.