[homebrewer]

I think it's just the difference between real hackers™ who often have a fancy for simpler languages and can write the whole universe in anything you give them, versus code monkeys chasing the latest hype cycle. (For reference, I put myself into the second category.)

[mywittyname]

The author is clearly talented and experienced building server-side systems. So while the language itself is new to the author, the design and architecture would be largely the same if this project were written in Ruby, C, Python, or Javascript.

Had they built something outside of their comfort zone, the results would probably be a lot more messy.