It's not "merely" a single incident. A single incident can be significant enough to deserve one or more sections and sub-sections devoted to the topic. It's a professor using hate language and the consequences he faces for his actions. For the record, My Very Best wrote, "I certainly agree with your last edit in this article and think all current refs are valid, such as that one included by you. Same with other refs, such as this,this, (same source) here and this, they also should be used. Main point here: these sources are reliable enough to source his own words, for example in his interview included by you." and "I must agree with MarshallBagramyan. Based on the discussion and sources so far, this article appear to be a case of self-promotion [1] by a marginally notable individual who is mostly known (based on sources quoted so far) for a genocide denial and ethnically motivated slander. There are multiple sources which are reliable enough to quote his own words on campus." The issue of notability in this regard, that is, before My Very Best knew about his scholarly works, is irrelevant. His position on that section is clear enough and your allusion that this probably falls under WP:UNDUE and should be diluted is fallacious, to say the least.