with programming languages which just rehash ideas (not saying it's a bad thing mind you! a good mix is better than a sum of its parts) you can nowadays get literally years of work in a week. truly novel stuff like bend2 takes longer (ask Victor), but I expect the next generation of models to compress those timelines, too (if the next generation is allowed to be released, since the security brouhaha going on now is seriously concerning)

pretty much that's the default assumption yeah. Anything new is probably a throwaway. If there's anything cool in it - rebuild it to your own taste. There will be exceptions that do become long lived projects of course. probably even the same amount there were before. But there's going to be a few orders of magnitude more throwaways so on average any new piece of code is going to be a throwaway

If you think you'll be able to divine that if and only if the documentation is entirely written by a human, then I'm afraid I'll have to disappoint you: no language has ever evolved strictly according to the initial plan of their authors. Nor has any author's strongly held belief about the future ever panned out the way they thought. Nor has the documentation ever held the immutable future of the language, even when fully human generated (which essentially zero languages have, even before AI).

The way to find out if a language is suitable for your needs is not to demand, in an entitled way, that the author perform an act for you. It is to (a) ask the author politely; or, failing that, (b) to examine it yourself (or ask Fable to evaluate it, using tokens you paid for).

This particular language, further, is Apache 2.0 licensed. If it's not working for you, fix it. Jesus.