The special thing is that current LLMs can invoke these kind of capabilities on their own, based on unclear, human-language input. What they can also do is produce plausibly-looking human-language input. Now, add a lot more memory and feed a LLM its own output as input and... it may start using those capabilities on its own, as if it was a thinking being.

I guess the mundane aspect of "specialness" is just that, before, you'd have to explicitly code a program to do weird stuff with APIs, which is a task complex enough that nobody really bothered. Now, LLMs seem on the verge of being able to self-program.