The author would seem to be suggesting that the process of writing is a task that not only expresses what we are trying to say, but benefits us by making our thoughts coherent. While I think this is a valid argument (I often start writing when I'm trying to get my thoughts in order) I don't think that it necessarily benefits our culture in total.

A response to our supervisor’s clever status update on Facebook is written carefully, so to keep the repartee going. Concision and wit are privileged in these new forms. Who would not welcome shorter, funnier prose?

An interesting ideal, to be sure, but not something that is actually seen in our interactions. More people are writing, but this does not imply that more people are thinking about writing. The "25 Things" lists mentioned are not filled with creative, original and interesting thoughts as implied by the article, instead they are filled with nonsense and inane "LOL"s and "I don't really know...haha".

It would be a nice world if more people cared about what they wrote, but writing only reflects thinking. If a persons thoughts are crap when they speak, nothing will change when they start pecking at a keyboard.