[vlakreeh]

1. I can pin my json parser dependency and literally never update it again

2. And how many times have we seen 20 lines of C backfire with some sort of memory safety issue.

3. First off, i'd go out on a limb and say the number of attacks from a well-established (or even a naive one) rust json parsing library is dwarfed by the number of attacks from adhoc config parsers written in C with some overlooked memory safety issue.

4. Usually being the key word, tons of adhoc config formats have weird shit in them. With json (or yaml/toml) you know what you're getting into and you immediately know what you're able and unable to do.