Except that there are many different kinds of intelligence, and all of these ones are artificial, so yeah, "AI" does cover a lot of different things. From your previous use of the term "true AI", I assume that you mean the type popularized by science fiction, which irl is referred to as artificial general intelligence. It has its own name because it is one of many different types of AI. The confusion for most people and the media comes from again, the tendency in science fiction to use the smaller term of AI to refer to AGI, likely for brevity. Much in the same way in how Sherlock Holmes stories confused people by referring to inductive reasoning as deductive reasoning.