I appreciate your counter anecdata, and I recognize that it offers a counter argument to my assertions.
I don't think that means we should take my post down. Do you truly believe that? Do you believe in such limiting of speech? Have I committed a thought crime by thinking that using up speak during a presentation is a defense mechanism? Is it possible I am sometimes right?
I hold that it's possible that I am sometimes wrong. Do you allow that perhaps I am sometimes right?
Do you think this post should be taken down too?
Are you able to introspect on your social groups usage of upspeak and ponder a reason as to it's origin? Perhaps it's advertising a set of values?
I don't want to dump on your idea too much. It's very possible there's a kernel of truth to it—I know I have noticed sometimes that people use higher voices (as a whole, rather than a cadence) when they don't want to offend. But I think we would all be better served if we learned to start with questions and calls for discussion, than trying to claim universal truth and quickly being refuted.