I can see the argument the other way around, where the text the user selects should be the text they copy, and that makes sense. But I maintain that the same article with different stylesheets should produce the same text content on the page for the user to copy.
[1]: The markup is in something approaching title case, except that words like `with` are also capitalized. Then the element is using `text-transform: uppercase`.
This is almost never the case for headers and such. New York Times or CNN have fancy logos/headlines, but we don't want to reproduce them each time we refer to the company or specific article - we just want the content. text-transform is a great way to achieve presentation need (bold headlines) without messing up content. Copying - excepting cases of visual copying, e.g. screenshot - should always have an option of content-only copying.
We're going to write a bit of software to convert these, or at least ask submitters to revise them. In the meantime we've edited the title above.