Others' opinions are a litmus test that saves me a lot of time in the long run. I simply don't have the bandwidth to go deep on everything that hits my radar.
Which is why an 'ambiguous' vote is a good system. It provides you just the right amount of information: "a lot of people think this is worth your time to investigate." Nothing more, nothing less.
And if I could see that vote, that would mean something. But votes are invisible here.
This is only true if 'ambiguous' is synonymous with 'exactly matching my own criteria'. Usually, it isn't.