> There's no real reason why bash couldn't have been evolved into a sane language with sane parsing and with modern constructs. By sane, I mean... read this:

> https://www.oilshell.org/blog/

I think the point is that, it did evolve, as your link shows—and there are lots of other sane alternative shells, too. The problem isn't that they don't exist; it's getting people to adopt them in sufficient numbers.