As I recall, there were almost no Yiddish speeches at the last Siyum. I if recall there was one, maybe two. No offense to the OP, but there were many more people offended by the lack of Yiddish than those somehow “insulted” by one or two speeches.
Yabia Omer – I know that you believe that the “VAST majority of American Jews do NOT understand Yiddish”. This is a frum event in the NY area, and I would venture to say that the majority do understand Yiddish. Just simply add up all the people in Boro Park, Williamsburg, Monsey, Monroe, and the vast majority of Lakewood.