I can see how post formats are useful for straight up blogging, especially personal blogs. But I don't see the value for my stuff or for most of my business/ministry clients. I'll be adding that filter to remove the post formats to most every project I do.

Personally I would prefer the filter to be reversed - so we'd have to add a filter to enable them instead of to disable them.

Why turn on such a bloggy feature by default when WordPress has been working so hard for so many years to get respect as a full CMS and not just a blogging platform?