Have you had many IT interviews? I have, they are vastly non-technical interviews.

Unless you count "have you ever used #CommonSoftware? how about #SlightlylessCommonSoftware?" as a technical interview.

I'm an IT administrator, not a programmer, so i'm speaking to my experience in that field, I am not trying to make any claims about how programming interviews work.

I've never had a whiteboard in an interview, I have in two interviews ever been asked to walk through a diagnostic process for problems, or asked any infrastructure or network design/architecture questions.

Its worth noting I work and live in Detroit Michigan, so I'm not exactly interviewing with major technology companies regularly. But I have worked for MSPs which glossed over technical interviews in favor of culture fit as well. (MSPs are especially incentivised to have employees with certs, they get discounts and kickbacks)