Almost as if an astronaut can come, do their thing in a whirlwind and leave for another company 2 years later, while the remaining plebs have to figure it all out.
The entire codebase was like that. It stood out to me as the work of someone who was very smart but worked alone and never had to work with a team, and never considered what someone trying to retrace his mental process would have to go through. He left zero documentation or comments, built the whole thing in a rush, sold it to another company, and we were the ones hired later to clean up his mess.
Some of it was very good. He was really good at efficiently encoding low level network traffic over packet encodings he invented or heavily modified. Seemed like he would've been a brilliant signals engineer or cryptologist. But having to work with his ordinary business logic code was pretty nightmarish, if interesting from a reverse engineering and psychology point of view.
It's just not how I would ever want to write code meant for mere mortals. But then again, he's a multi millionaire now and I'm a rando nobody living paycheck to paycheck, so I'm in no place to judge lol.
If he had not made such a big mess, you might not be getting this paycheck to clean it up. I think they call this “creating scope for other people” at big companies, real staff engineer stuff. =)