If this change were to be made, it would completely delegitimize the democratic process. I'll give you a few scenarios which could transpire.
Scenario 1: the issue of wanting to maintain good standing
Someone may be inclined to vote all yes, or mostly yes in order to give the appearance of having a fair and just perception. Or worse yet, vote no on every other photo/video. Or the person could have a low yes % and say "gee I need to get my percentage up to standard, I'll vote yes on the next ten screenshots"
Scenario 1: The issue of groupthink
Joe Schmoe has a voting record of 0 yes votes and 0 no votes. He goes to vote on scores and the first score he sees is a photo with no initials and a legit rating of 62%. Thinking that since the majority of people seem to be okay with this score, he votes yes, regardless of whether or not he actually thinks it's legit, he just wants his voting record to be in good standing.
Scenario 2: The issue of trying to maintain a "perfect" ratio of yes:no votes
2- John Doe has a voting record of 500 yes and 499 no. As he's blowing through screenshots left and right, he realizes he's coming up on his 1000th vote. He comes upon a screenshot and simply clicks "no" in order to say he has a perfect ratio of yes to no.
Yeah some scenarios are less likely than others but I promise you that people will be scared to vote no on stuff because they don't want to give the appearance of being "mean." There's a reason voting is anonymous is western civilizations. there's some countries where voting for the wrong guy can get your head cut off.