I don't know... maybe because it's 2014?
There are quite a few comments here complaining about the gaudy unusable interface produced by "modern JavaScript-based techniques", which in this case appear to provide virtually nothing that static HTML and CSS can't do. The dev team was lazy and wanted to show off, and screw anyone who doesn't think running gobs of arbitrary code should be a necessity for buying a ticket.
And for what it's worth my non-developer artist girlfriend has been using noscript for longer than I have. I'll let her know what modern devs think of her, though I don't think she's heard of wget.