"1) Python is unreadable."

Would you prefer C or C++?

"2) AI companies are content with slop and do not even bother with clear problem statements."

It's a filter. If you don't get the problem, you'll waste their time.

"3) LOC and appearance matter, not goals or correctness."

The task was goal+correctness.

"4) Anthropic must be a horrible place to work at."

Depends on what you do. For this position it's probably one of the best companies to work at.