It seems silly, but I think this could actually be helpful for some people. I have my upvotes hidden on reddit because I found myself regularly checking the site after I would post, just to see if the number of upvotes I received had increased. It's not like it was making me feel pressure or depressed if a post didn't get votes, but it felt the same way video games feel when you try to get a high score. Hiding the vote count made it so I don't get distracted by the feeling of wanting to see if my "score" is going up.