In my experience, similar time there, three managers, none of them knew how to code, and their managers varied- one was decent, one was a DMV reject.
But when I say they couldn't code, I mean that literally-- for one example degree in criminal justice, no knowledge of software practices, etc. This isn't another way of saying they were "bad programmers". No bad programmers can make great managers.
And do I know if what is true 100% of the time? Asking coding questions in a SDM loop? I have no idea. While I was there, I was only on TPM and SDE loops.