I think the replies in that thread actually do a good job of describing how it is a bit overblown.
As for Zig, I hope they make it. I think I kind of see why people are excited about it, but fundamentally the reason I'm not super hyped is that it doesn't seem to really enable anything new. It's far more expressive than C, but it doesn't make it easier to manage inherent complexity (to my understanding - haven't played with it a lot).
Also, Zig is set to release 1.0 beta in November.