It might just boil down to the fact that programs of some complexity in almost any language are hard to read, even more so when you're a beginner in said language and might not even know its coding/formatting conventions...

PS: The Part regarding Fiat is interesting, because we have a similar saying in Germany, namely: "Fehler in allen Teilen", which translates to "Errors in every part".

I have really no idea about the statistics about fiat reliability though, so don't take that as a statement from me^^