How is this a snarky comment? Properties were introduced in Objective-C 2.0 which is relatively new, thus, I'm asking why he chose not to use them when they're standard practice now.
And prefixing classes is not for "clean code", it's to avoid namespace collisions which is a valid and common issue in Objective-C development.
It's snarky comments like these that prevent people from confidently sharing their code.
Got a helpful comment to make? Great! How about sharing it minus the veiled insults next time?
OP doesn't owe you clean code. Don't like the code? Don't use it.