One of the top priorities over the last several months has been making the layout of the web site more responsive to mobile views. This forum, for example, works much better now. Groups are getting updated shortly with a similarly responsive layout. Armory, news, etc. are all on the way too. Profile/Settings is next on the list, I believe. While we generally suggest using the Destiny App if you have a compatible phone for a better experience (especially with managing gear/stats) we are not ignoring mobile web. It is just being done in stages.