In my experience, whether an interviewer gives a take-home challange has absolutely 0 correlation to the corporate climate. These things are usually decided on

In my experience, whether an interviewer gives a take-home challange has absolutely 0 correlation to the corporate climate. These things are usually decided on a whim by the interviewer, who has no effect on the nature of day-to-day work of an employee. If you ask them, they'll just say "I don't know, just sounded like a good idea. Don't see why not." So you're just filtering based on random noise.