That’s a good question. I don’t know.
Just speculating, the upvote/downvote does help a user know what is expected behavior and some understanding to build from.
It also provides a rich incentive to post because “number go up” feels good.
I’d love to know YouTube’s data on hiding the dislike button. It wasn’t great for viewers, but it may have had an effect on creator satisfaction. But I don’t know for sure.
They’re trying to solve one of the hardest problems in Computer Science: Naming things.
What do you call the framework, or design system—that thing that’s not quite a glossary of the terms—we’re going to use to describe the meta conversations around design?
“Design language” encompasses the colors, spacing, tokens, typography ramps, general rules, and all the other fiddly bits to unify on so that the more interesting parts of design and user experience can happen.
Naming things is hard :/