Reddit spokesperson Tim Rathschmidt tells The Verge that an experiment preventing users from logging in to Reddit’s mobile website is done. A Reddit admin confirmed the test a month ago after a Redditor said they couldn’t login to the mobile site on iOS.
Don’t know why, they’ve made their mobile site near unusable with the “use the app” banners already. (Yes I know at elast sometimes you can get some of the adblockers to remove it).