It's not that the CSS is linked at the end of the document but that the CSS is only loaded by Javascript after the document has finished loading.
That's ... unusual to say the least and if I'm honest, the wording "most stupid, brain dead thing I've seen in a long time" was the first thing that crossed my mind.
That's ... unusual to say the least and if I'm honest, the wording "most stupid, brain dead thing I've seen in a long time" was the first thing that crossed my mind.