@recursive

I would simply answer that there is good reason to have a blind spot to yourself, to counter the effects of self-serving bias. People are generally biased to see their own behavior as particularly valuable as it is a way of reinforcing self esteem, the same bias doesn't exist as generally towards others. It's for the same reason that raising your voice above others is seen as rude while "hear, hear!" is not. Since most people see their own input as more valuable, most people would be biased towards voting for themselves. If everyone was to live by the maxim of allowing themselves to upvote their posts, then the website would be overwhelmingly dominated by the comments of the largest whales always at the top and extracting value from their own system. If whales upvoting their own comments and extracting the rewards turns off new users, then it isn't something they should do. If it turns out to be just a handful of people complaining, then fine, it obviously isn't a big problem.

Incidentally, my one line post was not a rant. It was not meant to diminish your comment but to explain the sentiment which the other poster expressed. I'm sorry for calling your post rude, it wasn't intended as a personal slight.