Well… in subjects like mathematics they kind of do, don’t they? There’s not much room for opinion on what’s true and what isn’t. Of course, how something is done or the language used to describe it is always up for debate.
You did say ‘wrong’, though, not ‘considered wrong’.
There are no negatieve quanta and there are no negatieve qualities. It would be hilarious to suggest there would be products of the two.
You have 3 baskets with 5 apples each, you remove 7 apples from each basket, remove 5 baskets and you have -2 baskets with -2 apples each thus therefore you have 4 apples left all without the involvement of trees, like Jezus!
You did say ‘wrong’, though, not ‘considered wrong’.