Well, I'm not sure how you're correcting for bias in the feedback. For the same reasons you don't think it's possible for an interview to be not-stressful at all; you also can't get feedback about that process without the bias that they're not going to want to tell you that your process might be bad.
You'd more or less need to get feedback only from people who are already happily and gainfully employed who are also close to neutral on the 'agreeableness' spectrum.
At any rate. You can remove the stress from an interview mostly the same way a therapist can remove stress from iterative therapy. By building an ad-hoc environment of trust, safety, cooperation, and goal alignment.
You'd more or less need to get feedback only from people who are already happily and gainfully employed who are also close to neutral on the 'agreeableness' spectrum.
At any rate. You can remove the stress from an interview mostly the same way a therapist can remove stress from iterative therapy. By building an ad-hoc environment of trust, safety, cooperation, and goal alignment.