Sure, but if you can see the score ahead of time (and especially if comments in the UI are sorted by score), all it does it create an echo-chamber. It’s self-reinforcing. If the post’s score only showed after you up/down-voted and then you couldn’t change your vote, that’d be entirely different (not perfect either).

I also don’t care if other people found a post “positive” or “negative” or “neutral” in general. Truthful, well thought-out comments get downvoted into oblivion despite being true, simply because they aren’t mainstream views. Likewise, mainstream views with no basis in reality get upvoted incessantly, probably because humans psychologically like believing that their beliefs are true and seeing “confirmation” of their beliefs is seen as a good thing. This is what is meant by self-reinforcing echo-chamber: fringe or dissenting opinions get hidden, and “more of the same”/“towing the line” conformity get promoted.