[0xbadcafebee]

Posix compliance isn't holding back progress. You are welcome to make the most advanced, paradigm-smashing new shell in the universe. If it's good, people will use it. If you want it to replace Posix compliant shells, you might want to consider why people might not want to leave Posix and address that first, rather than ask everyone to abandon them "because we're advanced now"

But please don't ruin the one great thing about shell scripting, which is that it's still possible to write one shell script that runs everywhere. Yes it's old, antiquated and quirky. It's also very convenient not to have to 1) install new tools on every system, 2) adapt a billion old scripts for a new tool, and 3) learn yet-another-new-paradigm.