What it says on the tin, really. I think this is going to be an issue when they get around to the smaller communities... It's going to suck majorly, as most people's default will remain with reddit for community discussion like this...
I do normally use RiF on my phone -- but yeah, mostly I am using my PC. For me it is mostly the principle also. Especially the way it seems likely to affect blind and visually impaired users, but also even just the overreach and disregard of the userbase who creates any value the site has. :/