Does media consumption include "conversing with guests?" The sofa is the place everybody goes to chat unless we're having a meal.
Frankly, we'd probably use it a little less if our dining chairs were more comfortable, and I do think there's a very good case to be made that dining room chairs are more important than the sofa, but nonetheless, I really don't think a sofa is especially tied to TV culture in any way.
If we're going to be doing something rather than lazing around or eating, we're not going to be in the house at all.
Frankly, we'd probably use it a little less if our dining chairs were more comfortable, and I do think there's a very good case to be made that dining room chairs are more important than the sofa, but nonetheless, I really don't think a sofa is especially tied to TV culture in any way.
If we're going to be doing something rather than lazing around or eating, we're not going to be in the house at all.