Websites aren't published in braille either. As long ad the site content is compatible with standard assistive tech in the client software, it is fine.
This is hardly the same comparisone since it's not possible to publish them in braille on a monitor. And publishing a picture of the braille letters wouldn't even help since the blind person still couldn't read them.
Using grey text on grey backgrounds is much more similar to publishing all your text in images which makes is inaccessible to the blind person unless they install OCR software. But hey that's cool it's on them anyway right?
