Simplicity. Zig has no macros and no metaprogramming

This one is an odd point; this very article is a demonstration of metaprogramming*:

Thanks to Zig’s type reflection we can read a row of data into a user-provided type without needing to write any “mapping” function: we know the type we want to read (here the User struct) and can analyse it at compile-time.

* Which is a feature I favor, for the record.