disheartened? we've basically said the same thing.
as for the wizardry - it's jquery (or zepto or something else), not backbone that does this. while backbone integrates with and uses jquery heavily in the views, i don't think it's a fair claim to say backbone creates facilitates those user experiences. it helps us organize our code effectively so that we can create those user experiences in a well structured manner.
and come on, Jeremy... you know how much I love backbone! it's 80% of what I blog about these days! :)