Your point about other languages working outside of mIRC is moot because we're talking about languages for mIRC. And who cares about whether a language gets you a job? I doubt more than 1% of all the people who use mIRC script have any interest in getting a programming job, and even those who do understand the value of a purpose-oriented language like mIRC's. Yes it only works in mIRC, that's why it's a lot easier to do so many things with it because it was designed for that explicit purpose.