I think someone else mentioned the same here, but as I've browsed down the opinions, I wonder if it's good for different communities to have their own subculture on what votes mean.
For sure, outsiders dropping by might vote 'counter-culturally' and unhelpfully, but you can get a general sense of understanding in a community.
For r/all-alike stuff I'm sure things are different.
And some look like "I flip shit bigger, align with me or I will flip your shit"