Downvotes are one of the most important indicator if a post is trolling or nonsense. If it only shows the total, you lose all sense of perspective. A post could have 2 upvotes and 1 downvote or 10000 upvotes and 9999 downvoted, this massively changes the context of a post. Also why should I not use a vote to say I disagreed with something? I don’t always want to write a detailed explanation, especially not when people reply with “did an AI write this?” or simply ignore what I said. Most cases are not like your comment where there’s a valid reason to explain something.