the problem of making humans and groups more rational hasn't disappeared, and some people might want to pick up the challenge (and perhaps talk to people who were involved in it to rescue some of the conclusions and insights).
I'd think (and encourage) that anyone is welcome to pick up the challenge, regardless of the state of CFAR. More people working on the challenge seems like a great thing to have.
I've enjoyed using fish. The biggest thing for me is the autosuggestions, that alone has been a great QoL improvement https://fishshell.com/docs/current/interactive.html#autosuggestions