What positions do you have that a good cover letter is a strong positive signals indicating that the person will be good at the job? If it's a writing or commun

What positions do you have that a good cover letter is a strong positive signals indicating that the person will be good at the job? If it's a writing or communications position, I fully understand. If it's for software engineering, cover letters serve more to stroke corporate egos than they do to provide critical job skill information.