Mitchell Hashimoto (developer of Ghostty) talks about Zig a lot. Ghostty is written in it, and he seems to love it. The churn doesn't seem to bother him at all.

I asked him about in a thread a while back: https://news.ycombinator.com/item?id=47206009#47209313

The makers of TigerBeatle also rave about how good Zig is.