[dragonwriter]

> I don't generally believe in morals (as opposed to utility) in ethics,

That's...exactly where this should end, if you wanted to make an honest ethical argument instead of one grounded in a foundation you admit that you reject as valid.

> the MIT students who opposed this speaker are now morally obliged to listen to his criticism, because it's in good faith, rationally argued, and entirely within the context of the original lecture.

the MIT students are not morally obligated to accept your conclusion as to whether the talk is in good faith or any of those other things, much less to take any particular action based on your belief about those things.

[dekhn]

The president of MIT said the same thing as me, if you read what he said closely.