They have limited resources, so they focused on the features that were in the most demand. As I understand it they were always planning on building a mobile version for the site, but it was always a lower priority because the user base wasn't big or diverse enough to demand it. After the last year demand is sufficient that they're building it.
You'd think that in this day and age they would have designed the site to be responsive. Definitely looking forward to the mobile-friendly version!
They have limited resources, so they focused on the features that were in the most demand. As I understand it they were always planning on building a mobile version for the site, but it was always a lower priority because the user base wasn't big or diverse enough to demand it. After the last year demand is sufficient that they're building it.