As someone who also feels that with new languages, I see it a little differently. To me, the limiting factor of all these langauges was (no shade to Crystal not really the case there these days) most of them have terrible or no docs, have terrible onboarding, have rough edges that may or may not be fixed.

So it was a gamble learning something new could just result in a brick wall dead end where you can't fix the thing, you can't get in touch with anyone who knows how (or has time), there's no docs to help you on the way, the code base is a mess and inscrutable, maybe written the a language you don't know -- maybe even the one you're trying to learn! It could be very frustrating at times, to the point I'd just pass over some interesting languages if they weren't polished enough. Which is a shame because I know there's good ideas in there, I just can't invest the time to make sense of them. Seems contradictory, but designers are not always the best communicators.

With LLMs, all this consternation is gone. Can it write the program for you? I guess... but also not really because for many niche languages with interesting features, the LLM won't do so idiomatically, opting instead to implement enough functionality to scaffold a Python-shaped solution, and then it writes that.

The neat ideas are still there, the learning opportunity is still there, the ability to leverage technology in a way the LLM can't is still there. Especially in a creative and learning space!