It's not immediately more enlightening if you do click through either, except in the most general terms - some issue with changes to their Ts & Cs is alluded to in the first paragraph, and then there's a wall of text that probably does explain in more detail but simply didn't look like it was going to be interesting enough to bother reading.

And maybe that's the point: having just annoyed their customers, whilst they do need to communicate with and apologise to those customers - clearly the intended audience here - perhaps they don't want to kick up a massive fuss that lands on the front page of HN and other sites, and sparks a big discussion or controversy.