There's a good chance the actual needed implementation is less than 20k lines (I've found that LLM bloat grows exponentially), but even that's a stretch to review and accept wholesale.
The comment in question was a small feature of about 1.5k lines changed and it was solidly tested.
Look at what I'm able to achieve in my free time after work https://opennoodle.de
Would've never had the time without my army of agents
I wouldn't really consider (what is likely) sub-1kloc a "large feature", but to each their own.
I definitely could write this by hand - the stuff I built in the last 10 years before LLMs was more complex than this - but theres no way I'm spending all my free time to slowly craft something if I can just use AI and get the same results much faster