This comment fails to address the post in any way whatsoever. No claim is made of the "right" thing to do; a hypothetical is offered, and the question asked is "what do you do?" It is not even the case that the hypothetical rests on an idea of an intrinsic "right thing" to do, instead asking us to measure how much we value knowing the truth vs happiness/lifespan, and how much we value the same for others. It's not an especially interesting or original question, but it does not make any claims which are relevant to your comment.

EDIT: That does make more sense, although I'd never seen that particular example used as "fighting the hypothetical", more just that "the right thing" is insufficiently defined for that sort of thing. Downvote revoked, but it's still not exactly on point to me. I also don't agree that you need to fight the hypothetical this time, other than to get rid of the particular example.