Ok but that can be said of any technology. Chemistry is bad because someone used it to poison their friend. Phones are bad because it can be used for bomb threats, cars are bad because they put out of work the whole horse industry and you can go on and on forever.
Every single technology can be abused but it doesn't mean that they mainly cause damage.
(1) You are right, and that is why we should be much more cautious with technology.
(2) AI is unique in the sense that it has a much wider range and acts much faster. Therefore, it is much more dangerous, similar to how both salt and sodium cyanide are dangerous but the latter is much worse. You need to think in terms of the magnitude of the effect, not just its qualitative nature.