At first I agreed with the general "whatever" sentiment. It has some important implications, however.
It discourages people from voting if they're concerned about other people seeing their activity. This could result in a lower quality of scoring for posts.
I think that's probably accurate, but it needs context. When I discovered reddit, I was a teenager and I just lurked for a long time. At the time, the typical redditor was closer to 30 years old and a tech worker. I was a lurker because I didn't yet understand how to write a thoughtful, worthwhile comment. So there might be some lurkers right now because of that.
All kinds of people gravitate towards conversation, but older users will be more comfortable engaging in conversations at first. Reddit is not a good place to converse right now. We just need to focus on building community and encouraging conversations.