Kinda weird to blame Zig for not being at 1.0 yet while Jai is still in closed beta after 11 years. Meanwhile Zig is being in used in big-ish projects all over while Jai has... a single game engine? Jai looks cool but it's far far FAR behind and losing ground.
The fallacy of that argument would be if its author would seek adoption, however like Naughty Dog with their Lisp based language, John has no plans to have Jai win world adoption beyone his game engine.