For example, if you view the page source for the Beatles' artist page, a "data-context" attribute appears in the source five times. This Catalyst context data is constant, though - we should only be embedding it in the page once.

Additionally, putting it inside an attribute means all quotes (") in the JSON have to be converted into ", which further unreasonably inflates the byte count of the page. There's no reason the context data can't be placed in a normal script tag instead (where we only have to escape closing tag symbols).