On most social media the voting is public, see Facebook/Twitter likes. Hell back in the days of forums you could usually see the list of users that liked a given thread in most of the forum software I ever used. Reddit was the anomaly really

I think piefed has a feature where your votes never leave your instance, so are not exposed in this way (but obviously only appear on your home instance too)

Agree that it should be clearer to people coming from Reddit that that’s how it works though.