I read it somewhere that Chinese websites are taking this kind of obfuscations to the next level. The simple ones are randomly ordered divs re-layouted by JS at runtime. The complicated ones include custom font files which characters and glyph don't match, so for example <div style="font-family:custom-font">abc</div> would look like "123".
I know it's currently trendy to make digs at China (increasingly common in HN comments) but it's a huge country with plenty of talented engineers and accessibility advocates. With an aging population [0], such accommodations are becoming increasingly important.
